Or Yelp and mysteriously removing 5 star reviews for companies who don't buy their premium listings.
It's not that bad: http://getsatisfaction.com/ycombinator
Seems pretty upfront to me. It used to be worse but 37signals called them out publicly a while ago and there was a whole big thing.
Now they are essentially competing honestly with the customer support of other companies. This is aggressive but I'm not sure I could call it unfair.
Sorry for the slight change of topic.