The maker of AdBlock Plus is also an ally of online advertising
cnet.com
cnet.com
I find that quite funny. Their ads on that very site sure are not acceptable :)
I wish there was a verifiable way to know if an ad is tracking you and selectively allow those that don't. I have no problem with ads, I do have a problem with tracking.
All you need to know really. It sucks that it's on by default though.