I guess most N900 users really are nerds as this tread became such a joking one, instead of taking this "seriously".

I remember seeing footage from some Asian metro, with young people using dedicated gizmos that would beep when someone matching whatever profile they were looking for were close. Already mentioned is that iPhone app...and I'm sure there are others...

Quickly googled and found something like this:
http://www.synergetechsolutions.com/whos-near-me.aspx

If one wouldn't just concentrate on the "looking for sexy time" aspect but thought seriously about other applications as well, who knows, this could become something pretty interesting. I'd be interested to get a beep just from walking past someone else with an N900, no strings attached...

I'm also a bit confused, shouldn't it be obvious already that application developers should concentrate on Qt and aim for a much bigger segment of the mobile users than just N900 users? Or is there something I have missed...?

//K