I hate annoying advertisements. I understand that site owners get paid using ads, and I'm all for that, which is why I don't use a browser plugin to block them. The ads I do hate are pop-ups, pop-unders, and anything that makes noise without being enabled manually. If you hate those stupid video ads that automatically play, with or without audio, here is how I blocked them on http://forum.xda-developers.com/
There are a few ways to block ads, the most popular being browser add-ons. Each browser has its own plug-in system, and a myriad of ad blockers. I'll leave it up to you to find the one that works best for you.
What I would like to discuss, is how to use them to everyone's benefit. Some people turn on ad blockers, and block every ad that they can find, on every site. I believe that this isn't the best way to do it, and for a couple of reasons.