Off the top of my head maybe a good example is http://popville.com/ which is a local DC blog. The guy who runs it is a little controversial, but the site is extremely well-read and useful and 100% ad supported. http://arstechnica.com/ is great too. And then, ya know, stuff like Twitter wouldn't really work if you had to pay to use it. Or do Twitter ads not count?
I have no real issue with people who want to put ads on sites. My tolerance ends, however, when they try to moralize to me about how I render hypertext on my own machine. My attention and mental health are worth more to me than the ad impression ever could ever be to the marketer. Occasionally a site will refuse to serve articles unless I turn off my adblocker, and every time I just close the tab with no regrets.