I would put the actual navigation links and blog related information to the right, and keep only adds on the left side (or the other way around, but keep them separated)
also I would remove the google search thing (unless it is required in some way by your hosting plan) possibly put that at the top left side, above the rest of the adds.
Another thing that did strike me is that the mainpage was rather long scroll down, but yet there was only one actual blog post listed.. I would suggest having the last 3 show, gives the viewer the impression that the blog is very active.