Saul Hansell of the NY Times reports on AOL providing pop-up blocking software in AOL 8.0. Granted users have a choice, but if you had an "annoy/don't annoy" button, which state would you leave it in?
This just makes for one more decreasingly effective means of advertising on the Web. Depending on where you sit, your mileage does vary.
Memo to self: nice job avoiding NYTimes links up til now