E-Mail from Interpoker...$20 for 1 hand?

[ttleistdci]

I registered at Interpoker a while back and played a little there, but not much at all. I got an e-mail the other day from them...here's part of it:

"Come back to InterPoker and play one hand or more on any real money table (tournament and practice mode tables excluded) between now and July 9 (using the below account) and I will credit your account with $20 within one working day! No strings attached. Please note credits can only be applied on Monday to Friday."

I didn't see any restrictions or anything anywhere. Will they give me $20 if I literally play 1 hand and leave? Has anyone else recieved anything like this before?