I have spend tooo much on google ads and PR, with no real returns!

Hi,
i am new to the affiliate world. I set up a site to provide gamers with some bonuses for sigining up to various gaming sites (www.playgameswincash.com)
For UltimateBet, i was able to get my hands on some cool gear including Jerseys.
I put ads on google and used PRWeb - cost too much, and got very little or no response.
Can someone please provide any feed back?
I honestly think that the offer is good enough to entice new sign ups - or am i wrong?
If not, what other suggestions would you have to get more response? i tried flyers too, didnt help...
Thanks for any advice.