When I opened my Skype today, I noticed an ad for 7 days of free group video calling. Just fill in your email adress and Skype ID and they will send you a email with a code.
From their email:
Voucher will provide one 7 days access to Skype’s Group Video Calling service. No cash alternatives. Only one voucher can be claimed per customer. Offer available to recipient of the email only. Vouchers must be redeemed by 30th November 2012. Group video calls can be between three or more people (up to a maximum of 10)s.
