This may prove to be pretty handy. A search engine for display ads…
If you work in online advertising, until recently there hasn’t been a very good way to find out which ads are running across the Internet. Search engines like Google index the underlying web pages, and strip out the display ads. But if you work at an ad agency or are a sales guy at an online publisher getting ready for a meeting with a big brand, it helps to know what display ads they are running. You could click the refresh button on a bunch of big sites a few dozen times, or you can go to Moat, which is a search engine for display ads.
Type in Apple, Android, or Blackberry, and it shows you all the creative ad units running right now across the web. It’s a pretty handy tool for anyone in the industry, or even casual observers.