While plenty of us tend to avoid ads while we're searching the web, the folks at Moat are doing just the opposite. Moat lets you search brand names to see all their ads across the web. It's a great way to quickly see all the different campaigns for a particular brand and would be pretty handy for advertising students or perhaps getting ready for a meeting with a publisher or even a job interview. Here's an example of what a search on Mini Coopers brings up:
In addition to ad search, Moat also offers ad analytics helping advertisers understand how users are interacting with their ads using heatmap technology. You can see an example of their technology here.