The digital advertising industry, a landscape constantly touting its commitment to transparency and accountability, is facing a stark contradiction as a prominent programmatic watchdog, Check My Ads, finds itself repeatedly denied access to Demand-Side Platform (DSP) inventory. Despite the industry’s vocal advocacy for openness, DSPs appear hesitant to grant a seat at their table to an organization dedicated to scrutinizing their operations and supply chains, raising questions about the true extent of their commitment to a truly open ecosystem.
Check My Ads, a non-profit organization that has established itself as a significant voice in the programmatic ad tech space, has been actively building its reputation by highlighting industry issues and advocating for greater clarity. Numerous ad tech vendors have publicly celebrated their collaborations with Check My Ads, often citing these partnerships as evidence of their dedication to transparency. However, the organization reports a growing pattern of reluctance from DSPs when it comes to offering actual platform access – the very mechanism that would enable Check My Ads to conduct its essential inventory analysis.
Arielle Garcia, COO of Check My Ads, articulated this frustration, stating, "Many companies are quick to publicly associate themselves with our work, using it as a badge of transparency. But when it comes to granting us a genuine DSP seat, where we can perform the same due diligence as any other buyer, the enthusiasm seems to evaporate. It’s a bridge too far for them."
The most recent and illustrative incident involved a DSP, which Check My Ads has chosen not to name publicly, that abruptly halted a partnership agreement just as it was poised to begin. This decision came despite both parties having co-signed a Master Service Agreement (MSA). AdExchanger has reviewed emails between the two entities, provided by Check My Ads, which corroborate the existence of this formal agreement.
A Swift Turnaround: From Eagerness to Apprehension
The initial engagement between Check My Ads and the unnamed DSP appeared exceptionally promising. Correspondence indicates that the DSP was so keen to onboard Check My Ads that it proactively waived its standard minimum spending requirements. This gesture suggested a strong desire for collaboration and a recognition of Check My Ads’ unique role within the industry.
However, this eagerness quickly dissipated. Before Check My Ads could even launch its first campaign, the DSP expressed significant reservations, ultimately calling off the partnership. The stated reason for this abrupt withdrawal was a discomfort with "the scope of protections extended to our vendor and supply partners." This explanation, vague as it is, suggests an underlying concern about what Check My Ads might uncover or how its presence on the platform could potentially impact the DSP’s existing relationships.
The Strategic Imperative of a DSP Seat
For Check My Ads, securing a DSP seat is not merely an academic pursuit. It’s a critical component of their operational strategy, designed to serve multiple vital functions. According to Garcia, this was the first formal instance of Check My Ads seeking a DSP seat.
One primary objective is to enhance their research into programmatic buying practices. By gaining firsthand experience with a DSP’s functionalities, reporting, and supply-side integrations, Check My Ads aims to generate actionable insights. The organization intends to publish best practices and guidance for smaller advertisers, helping them navigate the complexities of programmatic advertising and avoid wasteful spending. This aligns with their recent work, such as a comprehensive report on Google’s Performance Max, which was informed by their direct usage of the platform.
Beyond research, Check My Ads is exploring the development of "agency-lite" managed services for small advertisers, operating on a non-profit model. To effectively offer such services and to understand the real-world dynamics of campaign execution, having a functional DSP seat is indispensable, mirroring the setup of any conventional agency.
Furthermore, there’s a pragmatic, self-promotional aspect to seeking DSP access. In addition to their watchdog and research activities, Check My Ads actively engages in marketing its services, newsletters, and branded merchandise. "It’s crucial for Check My Ads to possess technical expertise and remain current with industry evolution," explained Iesha White, Director of Intelligence at Check My Ads. White, who brings a decade of experience as a media buyer to her role, emphasized the need for practical engagement: "To achieve this, we must have skin in the game and invest financially. This allows us to truly understand the nuances of the platforms we analyze."
White’s prior experience with the unnamed DSP, having previously bought ads through their platform, prompted her to reach out to a contact within the organization earlier this year to explore the possibility of obtaining a DSP seat.
A Detailed Timeline of Engagement and Disengagement
The email exchanges reviewed by AdExchanger paint a clear picture of the progression of this partnership:
- Early Engagement and Initial Interest: The DSP initially expressed significant enthusiasm. A platform demonstration was scheduled for April, following which a summary of meeting takeaways was shared, confirming the DSP’s agreement to waive minimum spending requirements.
- Formal Agreement and Shared Objectives: In mid-May, the DSP provided an MSA for Check My Ads to sign. This document was subsequently signed by both parties, signifying a formal commitment. A post-demo recap email clearly articulated the DSP’s understanding of Check My Ads’ objectives:
- "Moving beyond Google PMax / Demand Gen into ‘real’ programmatic with full transparency and control, no black box."
- "Running small but meaningful test campaigns ($1k-$20k/month range) for your own research and analysis, and for select advertisers where you can learn and potentially generate revenue."
- "Evolving over time into a selective mini-agency model. (woot woot! SO honored you’re thinking of us)."
- Shifting Sentiment and Information Gathering: By May 20, a contact at the DSP informed Check My Ads that their DSP seat should be live within the following week. However, this notification was accompanied by a request for more detailed information regarding planned test campaigns, involved brands, expected budgets, and campaign objectives.
- Disclosure and Further Inquiry: On May 21, White responded, indicating that commitments from brand clients were still being finalized. She disclosed plans for Check My Ads to run its own brand lift campaign and a Cost Per Acquisition (CPA) campaign aimed at driving newsletter sign-ups, with a modest test budget of $1,000 – well within the previously approved range.
- Escalation and Red Flag: Following up on June 3 for a status update, White received a response indicating that "next steps" were still being confirmed. Crucially, this was followed by a pointed question: "In the meantime, I have one last question: If you identify any vendor performance concerns on [redacted], can we agree to loop us in first before escalating externally?" This question was perceived by Check My Ads as a clear signal of suspicion and discomfort regarding their role as a potential watchdog.
- Abrupt Termination: After a further follow-up on June 5, White received a definitive email from the DSP’s head of client partnerships stating, "we have decided not to move forward with this partnership." The rationale provided was an inability to "get comfortable with the scope of protections extended to our vendor and supply partners," citing an obligation to "consider the downstream impact on them."
- Internal Decision-Making: Garcia expressed her disappointment at the termination, given the co-signed MSA. The DSP’s head of client partnerships responded that the decision was made "above my level" and was driven by feedback from their supply and legal teams, originating on May 20 and remaining unresolved internally.
The Nuances of DSP Vetting and Industry Reluctance
It is important to acknowledge that DSPs routinely conduct thorough vetting of potential buyers before granting platform access. This process often includes assessing financial stability and ensuring compliance with platform policies. However, the circumstances surrounding Check My Ads’ experience suggest a deeper, more ideological resistance.
An ad tech consultant, speaking on condition of anonymity to provide candid insights, noted that while financial audits are common, the DSP in question never initiated such a process with Check My Ads. Instead, the primary stated concern revolved around the protection of its supply partners. This leads to the logical inference that the DSP feared Check My Ads’ potential to expose issues within its supply chain, a concern that, while understandable from a business perspective, directly conflicts with the industry’s public rhetoric on transparency.
"No DSP is going to knowingly onboard a party whose stated purpose is to turn that seat into an exposé," the consultant remarked. This pragmatic view highlights the inherent tension between a DSP’s need to protect its business relationships and the mission of an investigative watchdog.
A Pattern of Avoidance Beyond One Incident
The unnamed DSP is not an isolated case. Check My Ads reports similar experiences with other programmatic platforms:
- Podcast Invitation Turned Rejection: In a separate instance, another DSP, which Check My Ads also declined to name, initiated contact with White for a podcast collaboration. Following the recording, Check My Ads inquired about obtaining platform access for testing purposes, only to be denied.
- Thrad’s Cautious Stance: Thrad, a platform specializing in ad placements within generative AI responses, also presented a challenging scenario. While initially approving Check My Ads for platform use, Thrad later flagged campaign setup issues. These included the selection of sensitive targeting categories (politics, abortion, mental health, LGBTQ) where contextual ads in LLM responses are deemed unsuitable, and a merchandise storefront that was not configured for European shipping despite European audience inclusion. Even after these issues were rectified, Thrad ultimately refused to launch the campaign, with CEO Andrea Tortella stating that Check My Ads did not align with their ideal customer profile. Thrad did not respond to requests for comment.
These recurring instances suggest a broader industry trend where the commitment to transparency appears to have a distinct boundary when faced with entities that actively seek to scrutinize and expose operational shortcomings.
Implications for the Future of Programmatic Transparency
The experiences of Check My Ads underscore a significant challenge for the digital advertising ecosystem. While the industry vociferously advocates for transparency, the practical implementation often falls short when confronted with organizations that embody that very principle through investigative action. This creates a potential chilling effect on genuine accountability, as platforms may become increasingly wary of granting access to those who might challenge their established practices.
For small businesses and advertisers seeking to navigate the programmatic landscape, the lack of accessible, independent analysis and guidance can be a significant hurdle. Check My Ads’ mission to democratize programmatic advertising and empower smaller players is directly hampered by these barriers to entry.
Despite these setbacks, Check My Ads remains committed to its mission. Garcia issued a direct appeal to the industry: "If there are any DSPs out there that are confident in their supply and want to help us make programmatic accessible to small businesses, reach out to us." This open invitation signals a continued desire for collaboration and a belief that genuine partnerships can still be forged to foster a more transparent and equitable digital advertising future. The industry now faces the question of whether it will embrace such opportunities or continue to prioritize the comfort of existing relationships over the pursuit of verifiable openness.







