Mbites has a remarkably balanced story about Bluejacking — the practice of surreptitiously sending messages to strangers over Bluetooth — and how this latest wireless fad might actually catch on, at least in Europe:
[A]necdotal evidence suggests Bluejacking is taking off among teenagers the traditional harbingers of new forms of communication. A poll on mobile community Esato.com this month registered over 28% of visitors as having Bluejacked someone. New businesses are emerging to take advantage Bluejacking in particular. TagText.com is a UK firm which is taking advantage of the ability to send images as well as text over Bluetooth to create illustrated digital characters which teenagers can download to their mobiles and use for Bluejacking…The are also opportunities for so-called ‘viral marketing’, allowing cutting edge brands to circulate advertising; virtual flirting; electronic couponing and promotional messaging based on location.