Cool. You're in the cool people group now
Yes, it does run Skype, actually, and "natively" too, meaning not needing Wine and such. It's probably the only Microsoft-owned software that runs natively on Linux, though. I use it to make phone calls abroad.
I've used AIM (on Windows) and AIM Express in the past. Years ago! Is that what you cool kids are still using? I'm shocked.