It's explained everything on their site. https://www.google.com/adsense/ Code (markup): http://www.google.com/support/adsense/?sourceid=aso&subid=ww-en-et-storefrontEN_v2_HCFooterLink&medium=link Code (markup): You can read AdSense's FAQ which is sticky as well: http://forums.digitalpoint.com/showthread.php?t=23238 Code (markup):