I thought this was a ruse when I first read about it courtesy of a CiviliNation post on Facebook, but Cubeduel (link here), a new online game/service/whatever that allows people to evaluate their co-workers anonymously, is for real.
How it works
Working through LinkedIn.com accounts, Cubeduel sets up gladiatorial, tournament style contests in which employees are pitted against each other to earn the highest rankings from their co-workers. Here’s more from Cubeduel:
Cubeduel is a fun way to rank your coworkers. Who would you rather work with? Cubeduel uses your LinkedIn® work history to figure out who you worked with. Your current and former coworkers compete in head to head duels. Click a coworker to vote in each duel. …Your votes are completely, utterly private and will never be shared with anybody. Ever.