Ning.com

Ning.com is a web site that is found by Netscape's founder, Marc Andressen. It is a unique web site that let anyone to make his own social web sites by simply copying an existing web site. The site offers a group website, a photo website and a video web sites.

The site service is mostly free, except for a few premium services. The site has been run for almost a year.

The premium service of Ning.com includes: running your own ads, hide source code, map your own domain name, and increases service and bandwidth. I guess this site wants to attract people who is interested in testing the Web 2.0 market before commiting a lot of resources into it.