Forum Moderators: martinibuster
We did this and our site was then reviewed in detail by Google as part of the optimisation service. They raised no objection and were, in fact, very complementary about the look and feel of the site and how Adsense ads were presented.
I should point out, however, that we did not bury ads in the middle of text (which is, I think, what Ann is alluding to). On the contrary, we surrounded them by lots of whitespace and used different colours to separate them from the text.
That is, although we got rid of the Google line border, we replaced it with a much bigger whitespace border. This killed a number of birds with one stone: adding to the quality feel to the site, making ad/text separation clear, improving ad impact, and increasing CTR.