I Blog, You Blog, They Don't.
A very white middle-class panel discuss their interaction with technology over at Guy Kawasaki's blog. It's deeply unrepresentative in my opinion, but fascinating nonetheless (and the veotag video system is great).
One of my takeaways was the way the panel undermined the way blogs are counted in many surveys? All of them actively used Facebook or MySpace and yet none claimed to have a blog.
UPDATE: As I responded to Ann Michael's comment - a diary has many connotations and it seems to me that MySpace etc are generally used as social calendars rather than confessional diaries. That mean they're not blogs by my definition or more importantly in the users' estimation and thus I think the quantity of blogs has been overestimated because of this and many inert blog.