I used to spend countless hours using the following chat groups and chat programs.
Lets start off from earliest to latest:
mIRC - Internet Relay chat
ICQ - I seek You - Uh OH!
(I remember this menu like it was yesterday.
Only some people will recognize the program below and that you could get the IP from your ICQ number...
MSN Messenger - I would be on this all night after school
Do you guys have some great memories about these?