Hi I have placed an adsense text unit just above an image in my blog Post, http://bit.ly/d6nMe9 Is there anything against the rules? I'm asking this bcos the ad format i choose was 336x300 with 4 Ads, but G displays only 1 big ad for me??
Actually the main issue with your layout is that the way you have the header over the text ads might be considered a "Misleading Heading". See these examples: http://adsense.blogspot.com/2008/03/another-look-at-optimizations.html https://www.google.com/adsense/support/bin/answer.py?hl=en&answer=136881
The way I've most often seen it is with the post text wrapping around the ad unit. That way the ad is clearly not part of your content. You could also put a banner ad above the title and the square ad unit somewhere in the middle of your post. There are lots of options. The key is not formatting the ads in such that the post title might appear to be a heading for the ads.