Google has the Google Adwords Professional (GAP), Yahoo has the Yahoo! Search Marketing Ambassador Program and now Microsoft has developed their own sem training and certification with adExcellence. Microsoft adExcellence is opened to all US based adCenter users. It is the official training and accreditation program for adCenter.
The Microsoft adExcellence program gives advertisers the ability to become certified adCenter experts. The adExellence program offers 20+ training modules at no cost. There is a fee based exam that provides users certification. This demonstrates that the users are fully trained and proficient in the use of adCenter. Those passing the exam will be listed in the adExcellence Membership Directory and be able to use the adExcellence logo for use on their Web sites and marketing collateral.
Here is a screen shot of a page in Membership Directory and the logo. Notice the disclaimer bolded.