Hi - I just tried Tower Gaming casino through Askgamblers link and I got 20 free spins in their slots. I didnt even know about this promotion.
I went back to the site and found out the details: I get 20 free spins and this counts as a bonus. But, the nice thing is that i got to play with the money I was able to play with the free spin winnings - in my case $23.
I played a little on the site and increase my balance to $90 in 20 minutes. I thought that this was too good to be true so I tried to withdraw. I needed to deposit the minimum amount (I used Neteller: $10) but then I withdrew $70 from my account no problem (I figured I would leave $20 in )