Social news is the largest source for igniting campaigns, according to Greg Finn, Director of Internet Marketing at 10e20.

This was discussed in a session called Igniting Viral Campaigns Leveraging ConsumerGenerated Content at the Search Engine Strategies conference in San Jose. Social news can come from any social network really. Its all about whos using it, when theyre using it, and what theyre talking about. You never know when somebodys update will really become news and go viral.