Laterspam.org (this website) was initially a project by Andre Torrez.
What does it do?
LaterSpam.org lets you mark the tweets that you think are spam and reports spam tweets for you through the Twitter API. It also keeps track of suspended accounts
Basically, users can mark spam for fun! We’re here to talk about how we can combat spam. Not only in Twitter, but all mediums of social media as well. By logging into your account, it’s possible to report items as spam, and thus a decentralized filter is created.
Fortunately, services like Twitter have already taken steps to begin combating against spam. This is something that will help their efforts. It turns gaming into something productive for the online social community.