I did instant messaging “back in the day” with ICQ, but it’s only in the past year or so that I got serious about it. And what a mess! Because the people I chat with are on different networks, I had three IM clients running at the same time. But there is a solution. Pidgin is a free, multi-platform IM client that can simultaneously connect to 16 different IM networks, including Yahoo!, AIM, MSN, Google Talk, and, yes, ICQ.