For your logo, use the same blue color as the bar that's in your content area. The light grey is hard to read..
The mouse in the logo looks sad. Why? Shouldn't be happy he found the hidden cheese? Also, try some gradient over the surf bar, will give a web 2.0 style.
Name - Pretty creative. I love it. Logo - Beutiful and name related. Design - Can't say anything since it's a free template.
i think you must read the adsense tos one more time . your 468*60 on your header , i'm not sure that it's ok. i suggest you to check it