More ads doesn't necessarily mean more clicks. For your unit on the bottom, I would move it to the top or in the middle of your content (where the visitor's eyes are most focused at)
Where are the ads?? I just see some firefox referral buttons and only one ad unit where i think no one will even see at...
Just Put a Banner ad in the start of everypost and make the title of the ad ad Black so that it blends well
Instead of that banner at the bottom of your page, add a block ad in your articles and wrap the text around them. That should increase your CTR a lot.
if you mean the site which is in your sig., colours are ok but i have 2 suggests * use ads between your blog posts * using square ads allways give the best result