Since I have never seen an online ad which has prompted me to click on it (much less buy the advertised product), it could be argued that by blocking ads, I am actually helping the site to make money by not pointlessly reducing its click-through rate. Of course, I'm assuming that click-through rates matter, because really, what's the point of ads of any kind if you don't look at them? Branding? Bah. If every web site is pay-through, I'll find something else to do.

You mean something like this ? http://winhelp2002.mvps.org/ho... It blocks more than ads too, as it includes scam & malware sites.

I foresee a couple of problems with this. What's to prevent me from raising pigs using this untasty free food of yours? Or maybe transform it into semi-tasty food for resale? Perhaps sell it in another country? Free raw materials would certainly be abused :)