Thanks unalone, would you mind elaborating a bit? Do you mean it should allow the user to add his/her own tags beyond the existing tags - or that the user should be able to find related sites from the homepage as opposed to the supporting pages?
I'm a fan of certain kinds of sites. I'm a sucker for elegant interfaces and elegant bookmarklets, for two things. And I think that some sort of a way of identifying those sorts of sites would keep your layout elegant, while at the same time letting people into particular sorts of sites find good solutions.