What Can You Do With ICQ?
ICQ ("I Seek You") notifies you when designated friends and
associates are online, enabling convenient contact and efficient
communication with the millions of users who have already
discovered this fantastic tool.

ICQ's wide array of convenient features enable you to:
  Receive automatic alerts of online friends and associates.
  Make new friends and locate familiar ICQ users.
  Send and receive instant Messages, quickly and easily.
  Use ICQ to chat with a friend.

And much, much more!