Well, I have to admit - it is an idea overdue - social networking on the plane. Myself being from Europe and traveling there at least once a year, always have to look forward to around 9 hours of sitting, watching, eating, more watching and more sitting. With a little luck there is somebody sitting next to you, you can talk to, but with a little less luck that person sits 5 rows away.
Now with social networking on the plane, I would be able to connect to people anywhere on the plane I want to connect to. Hmm, sounds good. I'll give it a try and report on it.
To check it out yourself: http://www.airtroductions.com/Anonymous/Login.aspx