Some notes of interest on Face book now making things 'searchable'.
http://searchengineland.com/070911-103851.php

Social Media and Behavior -
http://www.clickz.com/3626977

Tracking topics on Wikipedia -
http://searchengineland.com/070907-071741.php

How facebook can help your business -
http://ask.enquiro.com/2007/how-can-facebook-add-value-to-my-business/