Shava Nerad is among many who pointed us to their horrible spamming practices, and says, "The blogs are calling it 'the Q problem' and a 'trust virus.' Bad juju, in general, not to mention they are one of those sites that sends you your selected username and password in the clear."
By the time you read this, there will probably be some news articles out about how evil they are. Until then, watch out.
(Thanks, William Smith, Susannah Breslin, Kyle Marler, Aaron Rowe, Mike, Patrix, Andrew Tonkin)