There's an enlightening new study conducted by B2B Magazine regarding social trends. You can read the article here:
http://www.btobonline.com/apps/pbcs.dll/article?AID=/20110404/SOCIAL/304049970
The most interesting thing about the research: while LinkedIn took the pole position as the most used social channel amongst B2B participants, Facebook clocked a modest second place in the rankings. In fact, they were separated by a mere one percent.

