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It is doing better and better, some days nothing but others a few dollars per day. Currently, it is at the top of page 2 for it's main keyword and climbing. It is page 1 and sometimes position 1 for other keywords. My experience with my other sites is once it hits page one for it's main keyword you generally do very well.
Read the part about Google Rules. It does take some time if you are only being found by Google searches (desirable) and not social sites. Best thing to do while you are waiting is work on your backlinks and start a new website.
I see the Adsense placement as being pretty good, and standard with what a lot of heatmaps show are prime ad display areas.