In my opinion mobile applications will only complement but not replace actual On line Dating / Social Networking Internet sites
On line Dating / Social Networking WILL NOT metamorphose / morph to mobile equipments
It is easy to use mobile internet with a laptop connected to a cell phone or a PDA but the cost is terrible high
Comparison Example for Argentina
fixed computer: a computer or a laptop connected to a fixed phone line, cablemodem (broadband or dialup) cost nearly USD0,50 to USD1,00 per hour.
mobile computer: a laptop connected to a cell phone or a laptop plus WAP access cost minimum USD6,00 per hour.
Here, in Argentina, teenagers (age 13 to 25) mostly have cheap cell phones and are used to send SMS to initiate a contact, and after that, to chat via a fixed computer. (for On line Dating)
Perhaps this will occur worldwide due to high wireless costs.