Don't you agree that a poll handled on wincustomize is likely a "geeks survey" (I admit being a geek and proud of it too) and does not reflect the general opinion of the public at large.
Offensive terms aside, I am certain that the general public has almost no idea what Trillian is, even though I use it myself. What I am saying is, your sample is extremely tainted. You are not reflecting the "people who buy the Sims/Myst", if you know what I mean - or the average computer user. I think you would find if you did, a much greater number of people using MSN
messenger because of its ubiquitous nature, and yes - fewer using ICQ, but almost nobody using Trillian. Trillian is a geek's paradise, but useless to a casual user. And lest we forget, casual users make up most of the user base still.
After all, if you asked who used Linux or had computer jobs, you'd find the
amount here were more common, because casual users don't answer online
polls.