There is a big difference between someone who worked hard to achieve success/celebrity and someone who just got there through dumb luck of family (Hilton) or just being with a famous person (K-Fed). You can hate on P-diddy all you want but he is an entrepreneurial dynamo who worked really hard to make Sean Combs into a famous, wealthy, powerful P-Diddy. I've worked with him in the past and no matter how much I dislike his persona, I respect and admire his work ethic and ambition. Same goes for Denise Richards. Never met her but I'm in no position to say she has no talent. Talent is more then just acting and singing ability.
Leeches are something entirely different and only in this shallow, reality TV media pile of junk could people like Paris Hilton and K-Fed get successful album and entertainment deals like they do. It's a shame these people can get more notoriety and fame then someone with 10x the ability of these lame hacks. It's really up to the public to move past the foul detritus of pop culture phenoms, especially in the music industry.