Tips for sling a product go viral

The Secrets of What Makes a Product Go Viral | Entrepreneur.com

Book review: word of mouth marketing

Word of Mouth Marketing: How Smart Companies Get People Talking

Facebook to Marketers, It’s Time for a Click to Action | TechCrunch

This article might be a bit 'over the top' for many smaller organisations.  It's good to know what bigger marketing departments are thinking about this channel though.
Facebook to Marketers, It’s Time for a Click to Action | TechCrunch:

'via Blog this'

Some good ideas about social advertising best practice.

Social Advertising: Like, Share, Retweet ... Buy? | Entrepreneur.com

Linked In advertising

This article talks about the options for Linked In B2B advertising.  Has some useful stats about Linked In growth too.

Six Ways to Make Your Content Go Viral | Entrepreneur.com