By updating your ad unit code, you’ll be able to make changes to your ad units from within your account, without updating your pages. Additionally you’ll have access to richer performance reports and optimization suggestions. Source & More infos : http://topadsense.info/adsense-tips-update-your-ad-unit-code/ [video=youtube_share;NfZ60poU8-w]http://youtu.be/NfZ60poU8-w[/video]