SongVoteOne of the best things about Evite and the event module on Facebook is how incredibly easy it is to scan the guest list of a party. That way, you can avoid showing up at an event where your creepy ex might be hanging out.

SongVote is another aid in the fight against making bad decisions in your social life. It's a collaborative DJ tool that allows everyone at the party to vote on what should be played.

The hosts choose a party theme, and songs get selected or removed by all the guests. The overall playlist will be horrid, though, because a full slate of music-by-committee likely means that nobody will end up happy with the outcome.