It's a bit grating. Good news, though, at least for Firefox users.
http://osxdaily.com/2007/04/03/disab...rt-in-firefox/
I'm sure you can do it in IE, but meh. You throwbacks can look it up yourselves.
Edit: You could also use Adblock to add individual sites if you don't want to use the nuclear option of totally disabling them.