Online forums

These days online forums are common.  Most businesses will include an online forum for their customers to access information and provide feedback.

Facebook or MySpace provide an extensive list of topics with chat rooms that you can join. 

MySpace

See (forums.myspace.com/?fuseaction=forums.home)
Internet Forums:  wikipedia.org/wiki/Internet_forum
Encarta World English Dictionary
 

Setting up an online forum

It is remarkably easy to create an Online Forum or chat room, for example see Google:   
http://groups.google.com.au/?utm_campaign=en_gb&utm_source=en_gb-ha-apac-au-google&utm_medium=ha&utm_term=free%20forum