Rohit Bhargava provides a useful list of widely different ways to use Facebook groups for marketing in his post, 8 Marketing Ideas from Facebook Groups. He started his own group for readers of his blog, Influential Marketing. As Rohit writes, Facebook has the potential to become the umbrella network application with the access othgewr applications such as Slideshare, Gmail, Twitter, Flickr, and Upcoming. The big eight are:

MyHome2.0 - A group to recruit tech challenged families for a new reality TV show

Support Monk's Protest in Burma - An online petition, of sorts, with more than 400,000 names so far

Yahoo! Pilot - A new group from Yahoo for those interested in hearing about and testing some of their new pilot technology

Target - An award winning Facebook campaign targeted at college students decorating their dorm rooms.

I read Business 2.0 - and I want to keep reading! - A grassroots and unsuccessful effort from editorial team and readers of Business2.0 to keep Time Inc. from closing it.

Bhargava Clan - A group for people with his last name to connect Bhargavas together worldwide and perhaps even facilitate arranged marriages

Dancing with the Stars Vote for Mark and Kym - to support Mark Cuban's efforts

What are your favorite Facebook marketing groups? Thanks to the IF team for the link.