Check this out: EventsHere.
"It's All Virtual" blog put up this calendar that anyone can add to as long as it's a virtual event, appropriate and not spam. This is somewhat interesting to me even though I'll prob never participate in any of this kind of stuff RL. It seems it is the wave of the future. It's not SL, it's RL virtual events all over. I'm posting it here because I want to keep a half an eye on it to see what is going on and maybe others would to. It sounds like it will be moderated, but free to use. Here's how: VirtualBlogHere.