I came across an interesting article on Brian Solis' blog, which provides a scientific basis for the nature and type of content that is shared most frequently on Facebook.
The article looks at a number of areas -- the words shared most/least often, the days of the week in which the most sharing is done, how parts of speech impacts sharing, etc. -- and provides some interesting points to consider.
The bottom line -- keep it simple!
Check it out here: http://www.briansolis.com/2010/05/facebook-sharing-driven-by-simplicity/
Geo.
