Presearch is a decentralized search engine, powered by the community. we can provide Internet users with an alternative to the search hegemony that dictates where most of us learn, engage and spend our valuable attention and resources. Presearch is a ground up, community movement, similar to Wikipedia. Human curation is an important strategy that is combined with scalable machine learning approaches. This curation and overall development of the platform is incentivized with PST (Presearch Token) exchangeable tokens that reward participants’ efforts. Presearch funds operations through a transparent, unobtrusive advertising system that enables advertisers to bid on keywords and sponsor results. In version one, relevant ads are displayed within the search field auto-suggest results. Ads are purchased using PSTs via auction, driving usage within the ecosystem.