I found that this theme isn't google adsense friendly.
As you know, google adsense only allow up to 3 ads per page per ads type.
Most of the blogger will put 1-2 ads on content (upper left or right/ mid post/ bottom post) and 1 ads on sidebar on a single page. And index or archive page will be 1 ads on 1 content, and there are 3 content on it, so 3 ads there.
Usually we will put another non adsense ads provider on index or archive page, so that we can maintain the single post adsense ads to max.
But in this new twenty twelve theme, you combined single post, index and archive content into content.php, it drew a huge difficulty for me to adjust the ads.
So, in my opinion, this theme isn't adsense friendly.
Can wordpress developer guide me how to fix it?