I think there are too many adsense ads. There is no content above the fold. I the short term you might make more money, but in the long run you would benefit to have less ads and more content, that way users came back.
Wow, way too much adsense, look at problogger it may give you some more idea's. Try this page http://www.problogger.net/archives/2009/06/02/4-more-tips-for-affiliate-marketing-on-blogs/
DONT post adsense like a spam. You wont get a click. Even if you get click, adsense will pay you very less.
The color schemes are too dark and the adsense are well positioned but there are too many in numbers.