Looking into the Functionality of these Four Social Networking Sites: testdrive.intronetworks, naymz, friendfeed, and lifestreamblog

[Chad Lawler]

I am looking into the functionality of these four social networking sites for Mashup potential:

http://testdrive.intronetworks.com/

http://www.naymz.com

http://friendfeed.com/

http://lifestreamblog.com/

Has anyone else delved into these much? What are the likes & dislikes?

Cheers,
Chad