Not quite sure what the push behind this offer is beyond getting folks to use some of the premium features of Skype for a year and then maybe continue a subscription to them but it is a very nice deal.
As you can see in the information above from the Skype Collaboration Project Special Offer page you get access to these premium features:
- Free group video calls (3 or more participants up to a maximum of 10)
- Free group screen sharing
- No ads
- Live chat customer support
According to the NeoWin article the voucher results in a $107 credit on your Skype account. I suspect this is how those premium features will be paid for over the next 12 months.
Also, a quick look through comments on the story confirm that this is a global offer and not just for US based users as we see so often.
Enjoy the freebies!