Ok, I’ve seen this in about 4 different situations now, all here on this blog. Look at the two adsense blocks below. They both came from this post about Namecheap coupons for April 2007.Adsense new formatAdsense old format

Notice the placement of the “Ads by Google” on the left ad. Also notice the lack of color. I don’t think the placement will matter much, but the lack of color will definitely help the ads blend into the layout of the page. For most of my sites, that is most important.

What do you think about these two different ads?