Here is an interesting networking tool emerging from the social network needs of daters. However, I can think such a "profile tool" would be really useful at meetups and other political, advocacy get togethers. It would allow speed networking at conferences.
In an advocacy context participants would be encouraged to enter information about skills, campaign interests and needs into the profiles. Show up at a progressive food court with a virtual billboard and let your phone help you pick who you sit at lunch with. ( Needs: Looking for dedicated volunteer to help with my writing loads, need young tech savvy virtual researcher to perform directed research on technology applications to campaigns, need subscription and email list newsletter tool, need a good intern) then hammer out all the skills that you have to offer and "working" a room gets accelerated by the software and phones helping make the connections.
Users download the BEDD software into a compatible phone, complete a short profile of themselves and include a description of who they want to befriend, or an item they want to buy or sell.
The software automatically searches for and exchanges profiles with other phones that come within a 20-meter (65 ft) radius. Matched users are given each other's contact details.