I really believe the future of social networks is on the handset. Especially when you can tie in geo location services in a safe way. MeetMoi is a location based mobile dating company. Basically you create a profile and then let other singles in the area know you are available. I also imagine it would work well in bars or nightclubs. I'm also thinking that it could be used as a way to notify businesses of your wants and needs and the savvy ones will find you to service you on the run.