Which CMS you prefer to place adsense ads?
1.Mambo is one popular CMS. Which means anytime you need to add/modify something you'll get a lot of help from the Mambo forum. Lots of mods and patches are available, some of them for SEO. Mambo are very advanced and made for very big projects.
2.Wordpress. With it's many plugins and theme choices you can design AdSense into the header, footer, sidebar, etc.; as well as in posts. Simple to install and vastly expandable, it just turned v2.0.
3.SubDreamer and Article Live, but you have to pay.
http://www.interspire.com/ Article Live