Inspired by this thread, I just installed Adblock Plus.
Definitely worth doing.
I did not change the settings to block all ads. The only ones I get now are small and non-obtrusive. I might even consider supporting the companies who have ads that get through. They are not obnoxious and may even have something I want in them. Of course a few with animations or videos and sound get through and I will never consider a product from one of those companies.