Raisintweets is a platform that allows users to fundraise for charitable causes through their tweets. By signing up and selecting a campaign and duration, users pledge to donate 1 euro for every tweet they make during that time. The platform aims to leverage the 300 million tweets sent per day and 500 million Twitter users to raise significant funds with very little effort. It launched as a prototype developed over a single weekend and hopes to now scale up by gaining more users and organizations.