I sent them something too. I usually run with AdBlock on, but sometimes I do turn it off just to see what's out there. I like the widget it puts in the toolbar in Safari, you can turn it off and on from there, and configure it on a site by site basis if some annoying ads get through.

The ones I hate the most are those that automatically start playing a video as soon as the page is opened. I'll command click links or bookmarks to open a lot of tabs in the background. All of a sudden you have something coming out of your speakers disrupting your tunes and harshing your mellow, then you have to search which tab it's in and scroll to find the ad to pause the video.