I agree with Exilibur in that smart guys can be popular too it just depends on how willing they are to make themselves socially interactive with other people. I myself have been labeled a "Nerd" (mainly because i get good grades and i just so happen to wear glasses because of my terrible cataracts) but i usually never had any trouble having friends and being fairly popular. I just think that whole Nerd, Geek, Dweeb thing is just a social stereotype that some people pass down on other's because they have self-esteem issues they haven't made themselves aware of yet because it makes them feel thier superior. Personally, those are the friends you don't want anyway. But that's just my whole perspective on that.
