The new Yahoo social networking site is called Mash. It is beta and right now is by invitation only. That willl change later but Yahoo hasn't said when.
Mash is at mash.yahoo.com but since you need an invitation you won't be able to login.
You may obtain a Mash invite at Mashable Mashable! - The Social Networking Blog
Mash is at mash.yahoo.com but since you need an invitation you won't be able to login.
You may obtain a Mash invite at Mashable Mashable! - The Social Networking Blog