Here are the catches: 

1. You open the account with $100 of your own money.
2. You keep the account open at least 6 months, or Chase takes its $100 back.
3. You set up direct deposit, or use your debit card 5x/mo, or Chase takes $6/mo from the account.

I recieved the identical coupon in May, and already opened my account.  So far, I've got the $100 and no problems.  This latest coupon is going to a friend.  Contact Chase at 1-800-CHASE24 to see if they will send a coupon to your home. 

Even if you opened the account and let them take $6 every month, you'd still be $64 richer at the end of 6 months!