Instant Messenging Usage Stats--Anybody have any?

KevinMU1

Senior member
Sep 23, 2001
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Does anybody have any moderately reliable source for info such as:

1) How many people worldwide use IM clients?
2) How many people use each of the major clients? (Sum will be greater than #1, obviously)
3) Average minutes a user stays logged in?
4) How many users a person has on their buddy list?
5) How many use IM clients at work?

I don't know how terribly accurate data could be collected, but if anyone has any rough ideas, I'd love to hear them. :) Thanks!