Think you have to be logged on to your PC to get in on social networking? Nowadays, that's not the case. New mobile devices and online services are allowing the tech-savvy crowd to continue updating their websites, even if they're not sitting in front of a PC. New networking sites like Twitter, Radar and Jaiku are just as addictive to the younger set as BlackBerrys are for professionals. The new technology allows sites to merge mobile phones and the internet so that users can download photos or send texts from their phone to their online channel of choice. But how will sites like these become profitable? Daniel Graf, co-founder of social networking site, Kyte, says his company may eventually charge companies to advertise on the site. He would then share revenues with the channels' creators.