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If the ads are well-targeted, then what about your visitors? Are they coming to the site looking to buy things, or just to get scores and chat? If the latter, you aren't going to get much in the way of clicks.
And here's another thought. Where are your ads? If they aren't on the left or in the middle, where they can be seen on first viewing a page, you won't get as many clicks.
AdSense sometimes works right away. Sometimes it takes some work. Other times it never works. But hopefully one of those ideas wil help.
On your clubs pages the Google menu ads are crashing into a form and are not showing.
There are menu ads (along a horizontal line) at the bottom but no leader board ads on some pages. Users may not even see the menu ads running along the bottom.
There is one page that has public service ads presumably because there is very little content on the page. Are there others?
When MS Explorer 6.0 finishes loading on the grey area lower left there is a message “Done but with errors on page”.
Personally I would blend the leader board ads a little more - no borders. But I would look at the above errors first.