Here is an OPML file of all the bloggers on Online Communities, Social Media and Social Networks.

To use it: Click on the link above.
File -> Save As on your hard drive
Use your favorite RSS reader and Import the OPML file.

Some useful links to import:

1. Google Reader how to import OPML files

2. IE Feed Reader how to import OPML files

3. My Yahoo import OPML files

Enjoy!