An overwhelming majority (89%) of all kids age 6-11 in the US spend at least some time doing online activities and - though many of their basic social activities haven't changed much over the years - they have vastly different communication styles and preferences than older age groups, according to a study from Experian Consumer Research.
I'd say that's a little high - you have to consider that the people/parents who return surveys about technology are probably the people who use technology! Here's a link to the methodology Experion uses...
http://tinyurl.com/5cru7q