Like most folks in my age group, I have long since succumbed to the evil of AOL Instant Messenger. So much so that I no longer regard it as particularly evil, even. They've unpackaged AIM as a free service wholly independent of their vile ISP/e-mail dealie. Oh, they'll try and use the one to sell you the other, certainly, but I am accustomed to such things.

I've also got Skype, for more direct conversations, and its possible there's a copy of Yahoo! Messenger kicking around someplace, but if so I haven't used it in years and certainly don't remember my password.