Check out the controversy section on their Gizmodo blog, which is easily the worst offender of Gawker. Jason Chen even earned an FBI raid of his house in the apple case. They've done enough to ruffle feathers from their sponsors at times. Their blogs are also staffed by immature idiots that want to stir up controversy facts be damned. Basically they embody everything that is wrong with the blogosphere. They act like a pack of hooligans that bully and abuse people, make stories out of it, then act like it's not their fault when they're called-out on it. They're the antithesis of professionalism and it's outrageous.
I remember when the whole celebrity leak thing happened earlier this year, they tried to do the whole "Stand by them in solidarity" thing, which was great! But it went against everything they've ever stood for, and they got quite a bit of flack for it. They've posted other celebrity nude leaks, and also refused to take them down for "Journalistic integrity," or something like that...It really ruined my perception of them, since it was one of the first times they'd ever been on my radar.