Looks like it is quite easy to shut off ads on Gawker. They do a simple boolean check to see if you have a "noad" cookie set. Try entering this into the console.

    javascript:document.cookie='noad=true; expires=Thu, 2 Aug 2021 20:47:11 UTC; path=/';

This shuts everything off, except for one ad at the top.

(Put a bookmarklet for this if anyone who wants to try it out: http://bit.ly/exvive)