This CNN piece on the introduction of digital billboards is fairly interesting, but what caught my eye is the fact that owners Clear Channel plan to sell advertising on a time-slot basis rather like the TV.

This is an interesting thought – put together ubiquitous digital paper type screens a l� e-ink, wireless remote billboard technology like this and you’re very close to a Minority Report type world where advertisers beam messages to you depending on who you are (cellphone handset recognition), the time of day and your known interests. Wow, the 22nd century is clearly closer than we thought!