I don't know whether to be completely psyched or completely freaked out by this.
Apparently, personalized billboards ala Minority Report are being tested. Both Google and Microsoft are working on out-of-home advertising that scans and recognizes traits such as gender and age, and then displays demographically targeted content.
From an advertising perspective, a new outlet for interactive and a new lease on life for outdoor advertising could be a great thing for both. From an individual perspective, do I really want the display ads at the mall pointing out I need to call Jenny Craig?
Of course, actual implementation of these smart billboards is still a ways off. So maybe we've all got time to trim down first.