Hello CountDuckula (I just felt the need to use that word in a sentence), the Card Player promo code is still good, should be good for at least another month. But the key thing here is that there's no downside to signing up now. The only rules are that you must use the code when you 'register', and you must make the 'initial' deposit the amount you want matched (up to $500). But after that, there is no penalty if you want to withdraw money at any time (for instance to use at another site for their promotion), and there is no time limit to fulfill the bonus.
Have fun.
Paul
http://www.pokermountain.com