Poll: Do you use an ad-blocker?

Curious to know how widespread the usage of ad-blockers are, at least in the tech-savvy world.

Yes, though I will occasionally unblock certain sites.

Primarily I use ad/script blockers as an extra layer of security.

I would vote for a third option along the lines of "I allow ads but block flash or don't have it installed." I used to have an adblocker installed, but switched to blocking Flash as soon as I discovered the ability for Chrome to disable flash components until I click on them. This lets the good sites with unobtrusive ads still get their impressions and hides all of the really bad things like ads with video or sound. It also doesn't hurt the browsing experience as badly as completely uninstalling flash.

I put 'no' but my brain seems to be a pretty good ad-blocker so I haven't found a need for another one.

no, don't be parasite