Your post is confusing. You say you don't see any setting for video, yet you also say "it works"? What works?
Since we don't have a front facing camera, what are we trying to do here, exactly? The best we can hope for as far as I can see right now is the ability to view someone else's video feed (or perhaps use our rear-facing camera for akward one-side-at-a-time video chatting).
If you're talking about Yahoo messenger working as an IM client, I think that's been out and working for a long time already...