This is a lengthy debate. Here's my stance.
And I also will note that if I see specific instructions on how to block ads on these forums, I will delete them. I'm not as extreme as some webmasters... in that I remember Ars used to ban people from their forums if they admitted blocking their ads. But, it's just a bit of a slap in the face discussing how to specifically block ads on a site whose is supported by ads.
I've heard all the arguments and disagree with them.
1) "I don't click on ads anyway". It doesn't matter. Ad revenue is generated from impressions and/or branding purposes. If you block them, you are still removing revenue from the site.
2) "It's the same as skipping commercials on TV." It's not, because whether you skip ads or not on a TV show, it doesn't affect their revenue.
I don't like intrusive ads either and have made it a point to keep those off this site. If you do block ads in general, but like using this site, you should pay the $25 for the ad-free version.
arn