Thomas Slabbers is a serial 🏷️#entrepreneur and the founder of 📝SocialDatabase, a company focused on advertising relevance for 📝X (Twitter) and 📝Reddit. He is also a founder of 📝Authorix, the Amsterdam-based authority-search platform, where the company names him alongside Duco Janssen, Joran Cornelisse, and Peter van Kampen as the team leading it. He studied at Nyenrode Business University.
His work centers on data-driven targeting and campaign personalization across major social platforms — the problem of matching advertising to the audience that actually wants to see it, rather than broadcasting to everyone a platform can reach. That focus places SocialDatabase in the audience-data layer of paid social rather than in creative or media buying. Authorix points the same underlying asset in a different direction: where SocialDatabase uses cross-platform social data to target audiences, Authorix uses it to rank the people an expert community actually recognizes.
I was introduced to Thomas by 📝Maciek Laskus in October of 2025.