Here are some numbers from page 42 of Groundswell, by Charlene Li and Josh Bernoff:

From a sample of 10,000 online US consumers, the percent who say they do the following things monthly:

Use Twitter – 5%

Write articles, stories, poems, etc, and post them online – 7%

Use RSS – 8%

Listen to podcasts – 11%

Publish / update their own Web pages – 11%

Publish / maintain / or update a blog – 11%

Post ratings / reviews of products or services – 11%

Listen to or download audio/music from other users – 14%

Contribute to online forums or discussion groups – 18%

Add comments to someone’s page on a social networking site – 18%

Update / maintain a profile on a social networking site – 20%

Read blogs – 25%

Read reviews / ratings – 25%

Visit social networking sites – 25%

Read online forums or discussion groups – 28%

Watch video from other users – 29%

Those of us in b2b marketing must keep in mind that business-to-business happens person-to-person. And more and more, folks are getting together online to swap stories in one way or another…are your prospects there?