Looking for Wordpress theme that works like XANGA.COM

Does anyone know a wordpress theme that will offer similar functionality as xanga.com i.e

- Users can sign up and submit posts

- Each user has its own author or profile page

- Posts are displayed on homepage in a list form

- Plus all the social features on xanga.com

Theme doesn't have to be exact replica but the closer the features the better.

Thank you

i think the multisite function can do this, just search it!

btw, u you find the answer plz tell me this op