Hi I just launched the new version of my site www.freecss.info. I would ask for a review of the blending on the site. I have some ads within articles but also have the ads at the top and at the left. All tips and comments appreciated.
It looks very nice blended. But I'm not sure if Your horizontal Ad Unit doesn't break rule of not attracting ads.
to me the horizontal ad is legal... but it does not hurt to ask google about it just to make sure... cool site...
The placement seems to be fairly effective. However, a large rectangle within content is always recommended.