Theoretically it would, but skype tends to lag quite a bit with large conferences, and it's harder to get everyone's name and add them in. This allows people to join themselves. If you think it's too much trouble it's fine.
Voice chat for the video game event. I thought it would be nice to have for everyone to hang out in and chat while we play. It's free, and I've already made a server with multiple rooms for different events, if we have more than one going at once.