"Google and Yahoo have come up with new and very similar plans to respond to the challenge from MySpace and Facebook: They hope to turn their e-mail systems and personalized home page services (iGoogle and MyYahoo) into social networks."
Mashable Invites is a place to swap invites for "Web 2.0" sites that are currently in private beta mode. Just add your name to an invites list and other Mashable Invites members will drop by and invite you.
In the last several years we’ve seen the rise and fall of many social web applications. While most of our attention gets paid to the hugely successful ones like YouTube and Facebook, we can also learn a lot from those that have failed. Here are some of