Well p4p was Tarver but now that Tarver is out of the map. Maybe is the Klishsko brothers, who do you think is the most hated boxer here.
Id say there is alot of uneccesary hate for the Klitschko's, especially Wlad. But i think you are right when you say Floyd is maybe the most hated.
Most of the hated ones also have massive fans. Very possibly Margarito now. Personally, I've always hated Enzo Maccarinelli, and for the life of me I can't explain why I'm so vehemently against him.
:goodRuiz has at least tried to fight everyone, and given he's a very limited fighter winning more than he's lost around the top of the division, he deserves some love.
Ruiz & Margocheato are good mentions, but nobody really cares enough to talk about them. Probably Vitali Klitsckho, for good reason.