Gender and the social web

Here is a very interesting article on the gender and influence on the social web. The article presents some data on web usage by gender (such as the one below )

In terms of influence, the results depend on what you are looking at: across the general population, women were more influential, but there were more males than females when the top influencers were considered.  As for the data, I don't know how he determined gender ... if it was based on self-reported results, then they may be somewhat suspect, for, as everyone knows, "On the Internet, nobody knows you're a dog"