Well, I'm of two minds on this subject. I have never installed adblock and its ilk, because I know that "free" content comes at a cost. So as much as possible I sit through commercials from network TV's streamed shows, I allow sidebar ads to populate some screen real estate on websites, etc.
But I have my limits.
- I don't feel guilty at all about skipping past ads more than 30 seconds long
- I will do everything I can to block ad content that changes my browser's behavior (e.g., pop-up messages, float divisions that obscure the page content, etc.)
- I will block ad content that takes up more than half my browser real estate
I suppose in the end that makes me no better than folks who aggressively block every single advertisement in any form -- "We already established what kind of woman you are; now we're just negotiating on the price". But it helps me sleep better at night knowing I'm at least willing to try to give them some of my attention in return for free content.