I checked into this as well. As Bono's American Wife mentioned, not only do YOU have to complete 9 offers, but you have to refer 2 people who must ALSO complete 9 offers.
Many of the offers have conditions and are not simply 'sign up and cancel'. For credit card offers, you have to make purchases/balance transfers and wait for those to be completed. I imagine other deals have waiting periods as well.
Add to it, the fine print doesn't guarantee you tickets. By the time you and your 2 referrals complete all of the requirements, they could "run out" of the allotment of tickets.
For the money you end up spending on all the deals and the stress and hassle of getting yourself out of contracts, you're probably better off going through a ticket broker!
Thumbs down on this offer!