Skype does not allow video chat between more than two participants.
Is there a video chat / conference call service that allows more than two participants to share video?
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Probably the easiest service I have found for this: http://tinychat.com/
Supports MANY more than 3 video users. Nothing to install (but flash). Cheers!
If you and the other participants are on Windows, there's a beta version of Skype which allows up to 5-way group video calls.
If you're all on Mac, iChat supports multiperson calls.
Update: The beta allowing for group calls is also available for Mac.