oovoo vs. skype

I use both of these apps and like them both and both offer some great features. I have to give the edge to oovoo for video chatting with it's multi video chats at one time. Although it's not very popular as of yet.
What does everyone here use and why?

I use skype just because I didn't know about oovoo. I might as well take it for a spin. The downside is that I have to get everyone I communicate with to move to oovoo.

yep, that's the down side for all of us when trying something new....