walkman - 10:18 am on Mar 14, 2010 (gmt 0)

If you use tricky workarounds to force CPM ads on 1000 people who hate advertising so much that they'd prefer to block them, wouldn't that mean the advertisers aren't getting their money's worth on those 1000 ads because they're being shown to a completely nonreceptive audience and might even be building negative brand awareness instead of positive?

That's an assumption you make and I'm sure companies factor those in. I spend 12 hours online a day and still click sometimes. If you are a webmaster and see a hosting deal when you're looking for hosting, why wouldn't you click? Or an offer from Amazon tech? or $50 free from adwords?

Even if you never click, seeing, for example, Verizon or ATT there all the time gets it in your head and next time you want a cell phone you have them in mind.