I primarily use Skype to chat with Aurrie every once in a while. She's a really fun person to talk to IMO :3 A secondary function I use Skype for is to get away from the shoutbox when the latter goes inactive. To that end, I hang out in the Unofficial ZD chat, DARK MASTER's chat, and like two other ones that I was involuntarily added to. I also use it to get away from the shoutbox when a debate or some stuff goes on, as I personally do not care for debates or needless opinion wars anymore. xD
I've been in a voice chat--I heard Julia, Keef, MC/Nelson, Ath, and PK--but I didn't participate in one at all. Several times A_LINK_IN_TIME has tried to add me to a VC, but that was either when I was at school or when I wasn't on Skype lol. I don't owna mic anymore, so I would just be a spectator of VCs anyway lol