Lockerdome

Mid-tier independent native and attention-based advertising network that competed in the programmatic display and content amplification space before shutting down.

LockerDome was a digital advertising technology company founded in St. Louis, Missouri, that initially launched as a sports-focused social network before pivoting to become a programmatic advertising platform. The company built its identity around 'attention-based advertising,' positioning itself as an alternative to impression-based metrics by focusing on whether users actually engaged with and consumed ad content. This differentiated approach attracted publishers and advertisers looking for more meaningful performance signals beyond simple viewability. At its peak, LockerDome operated a native and display advertising network that served billions of ad impressions monthly, working with a broad range of publishers and direct-response advertisers. The platform offered tools for audience targeting, content amplification, and performance optimization, competing in the crowded native advertising and programmatic display space against established players. The company rebranded and refined its product offerings over the years, at one point operating under the 'Vault' brand to reflect its evolved advertising technology focus. Despite raising venture funding and achieving meaningful scale, LockerDome ultimately ceased operations and was listed as deadpooled on Crunchbase. The company's story reflects the broader challenges faced by mid-sized independent ad networks in an ecosystem increasingly dominated by large platforms and consolidating programmatic infrastructure. Its legacy lies in its early advocacy for attention metrics as a more meaningful currency for digital advertising effectiveness.