I don't boycott facebook, and I don't think other people will either. But it will drive more to adblocking, I'm sure of it. Not everyone, sure, but more.
That said, As long as theres no sound and the ad is to the side of the actual content/app, its not that big of a deal. I use adblocker for all sites except grooveshark, which uses a video ad with no audio. Dont mind it that much...