...have popped up this year with names like Friendster, Tribe.net, LinkedIn and Meetup. They help people find pals online...of LinkedIn's more than 40,000 members. Over at Tribe.net, you can create your own free "tribe" centered on...

...staying in touch with old ones. Friendster was one of many such "virtual networking" sites debuting with names like Tribe.net, LinkedIn and Friendzy. -- Vonage and Skype: These two pioneering start-ups are pushing the boundaries of Internet...