The first one that I love loved was FreeTel. That thing was the BOMB! You could "call" people and they could choose to answer or not. You could also leave a "message" at the top of the screen if you wanted to say something personal, etc. It was so fun!!! My friends and I had such a good time talking on there. THat's where I learned about smilies! :)
The next one that I loved was Chat Box. Chat box was a java based chat on some webpage. We spent quite a lot of time there jumping between rooms. This was before Yahoo had it's chat rooms even!

THEN, the best of all: ICQ. I think by then, I might have even had my own computer, and boy did I spend a lot of time on there. The UH-OH sound still could turn my head if I heard it. My cousin had a bird and it learned how to say UH-OH exactly like ICQ cause it hung out right next to it. It was hilarious! I even remember my ICQ number. Too bad everyone has gotten rid of it, cause man, I sure had quite the list on there. I doubt I'd even remember anyone on there though.
A few years after, AIM came out with their chat programs, and MSN, and Yahoo. I still have my AIM and MSN account, but I don't think I get on Yahoo more than once a year. The people on my aim and msn are quite a short group of people now. I think most online chatting has been changed over to MySpace and Facebook. I do like those though.
It's amazing how much technology has changed and morphed in the past 10-12 years. I love technology!