Used the 1:9:90 model for participation model recently?
Felt slightly uncomfortable with the figures as intuitively thes figures simply don't feel right?
Enter stage right Holly Goodier, Head of Audiences at BBC Future Media. She presents the results of an 18 month study of 7,500 individuals resulting in that old model being blown out of the water.
This fascinating talk reveals that the 1:9 element - the much quoted 10% - of the stat is actually now 77%. The talk is 23 minutes long, but if you're interested in the shape of those contributing on the net this provides most of the answers you've probably been looking for.