Its not a May ICO but it derives from events happening in this month - the EU GDPR regulation.
im following Liberdy - The Data Trading Foundation That Rewards Users.
Liberdy is formed by digital advertising and media veterans, with the goal of revolutionizing the digital advertising industry, and creating a new advertising ecosystem that is rooted in the opportunities of data-driven advertising.
Liberdy embrces users as equal partners and also as the owners of their data, Liberdy is dedicated to providing a new, transparent, decentralized and vibrant digital advertising economy
the ecosystem enables all advertisers to access permissioned data from end users for effective advertising using unparalleled, precise data, yet makes the data anonymous and provides safeguards for its protection and use.
sound's like a great deal to both users which finally be rewarded fot their data and also for advertisers looking for genuine data.