I would try to place some ad units between your posts. A link unit along the top of your page may do better than a banner too. Be sure to use Adsense channel tracking to keep track of any changes that you make. That way you can track the results. Also after someone scrolls down the page there is no ad for them to click on. If you are looking to increase the Adsense revenue of your blog a couple of good links to check out are Google Adsense tips especially the Heat Map Graphic. Another great source of information about blogging is Problogger and the many great topics on these forums. Just browse around for a while and you will learn a wealth of information from other users. Good luck with your blog.
hi, it seems to me that you have a lot of real estate available on the right. you might want to do something about it. Usedmac pointed out something kinda true, after reading about your articles, i find myself with no 'outlet' at the end of the page. You might want to pipe your viewers to your ads. my humble few cents worth