I am pretty ambivalent about her, I first saw her on the Daily Show but frankly she is not that funny. When her segment comes on I just feel that she tries too hard and her jokes just kinda fall flat. I don't really a personal grudge against her.
From what I know, people dislike her because they generally feel that she is one of those hot girls who pander to nerds. You know, those who are not really that into "nerd stuff" but pretends so that the demographic would pay more attention to her. I mean, her last job was hosting some show which involves her deep-throating a hot-dog.