Ads are everywhere: They're in our content, they're online and offline, they're on buses, billboards, and more. I've been told just to "get used to it" -- that the advertising proliferation is only going to continue -- so I'm thinking of selling some space on my forehead. Might as well take advantage. Of course, those who are successful in digital advertising are generally those who can find these to non-traditional areas to use as advertising space, especially if they prove more effective than typical display (or banner) advertising. Late last year, a young startup called Solve Media began taking ads into a new niche digital territory by reformulating ... CAPTCHAs.