It’s hard to show tech-savvy consumers advertising. Your grandma might still be looking at every pop-up ad a rapacious Internet businessman can come up with, but between fast-forwarding past TV ad spots with your Digital Video Recorder, pop-up blockers in your browser, and the Do Not Call list, a lot of people are avoiding the vast majority of advertising that’s being hurled at them. Advertisers never give up, though. They just try a different approach. High-tech ad avoidance is leading to a boom in one of the