The global social networking wave that led to the rise of MySpace and Facebook is making the leap from computers to cellphones. New businesses are popping up that want to capitalize on a shift in the way people think about their phones.

The services, with names like Twitter, Radar and Jaiku, hope people will use their most ever-present gadget to share their lives in the same way they have become accustomed to doing so on Web sites like MySpace.

Kyte, based in San Francisco, opened its site to the public on Monday after a test period. Daniel Graf, its 32-year-old co-founder, sees each of the world's hundreds of millions of camera-phone owners as a potential television broadcaster.

"To run a television network used to require expensive cameras, a satellite connection and studios," Graf said. "But the production costs have gone down to zero. Now you can share your life over a mobile phone, and someone is always connected, watching."

Central to Kyte's technology is the marriage of mobile phones and the Web. Users download Kyte software for their phones at www.kyte.tv and can send their photos and videos - however grainy - from the phone to their online Kyte channel.

Viewers can tune into the programming on their own phones or on the Kyte site, or they can have the channel show up on their own Web site or social network page. In some cases the video stream can be watched live. Those who are watching the same channel can swap messages with each other and with the channel's creator, even if he or she is silently stalking wild animals.