I still use ICQ because it has a lot of people on it from my early computin' days that I like to stay in contact with.
It's strange, to know and still talk to people on a regular basis from BBSes that you played on 8 years ago.
I had a chance to sign up with ICQ very early on, when the numbers were in the 1500000 range... ICQ started growing rapidly shortly thereafter..
By the time I got around to registering(some 6-8 months later), it was already in the 8Ms. When my brother signed up about 6 months later, it was up to 19M. :Q