ET call ICD

Wired News: Cheaters Bow to Peer Pressure
This is an old (2001) story I recently heard about. At the time, the SETI@Home project (which distributes the search for extraterrestial intelligence computations to volunteer machines around the world) was plagued by cheaters, including folks who hacked the client software to report that they were contributing far more CPU cycles than they actually were, apparently in order to get the reputation of being the top contributor in the search for ET. (Can you put that on a resume and get a job?)
Another user-contributed content (or effort, in this case) service that had trouble keeping the bad stuff out.