As I noted at the meeting Friday the Section 508 standards, which MSU presumably is required to meet, are up for revision and the comment period ends June 21, 2010. You can visit the proposed new standards here: http://www.access-board.gov/sec508/refresh/draft-rule.htm.
It's a lot of reading but two significant things that are noted and I'd bet will stay are that posting content to third party sites ("such as videos to social media sites")* does NOT remove the obligation of meeting the rules for any content posted to the social media site and that rather than specify precise rules themselves the proposed guidelines adopt the WCAG 2.0 guidelines at the AA level: http://www.w3.org/TR/WCAG20/ .
The only problem with that is that the How To: http://www.w3.org/WAI/WCAG20/quickref/ info at W3C is still a long way from finished and things change, such as the minimum contrast ratio that used to be 5:1 is currently 4.5:1 with little reason to believe for certain that 4.5:1 will be final.
*About as clear as a government regulation can come to actually stating "Putting a video on YouTube means you also must link to the transcript there and the YouTube player must work from the keyboard exclusively."
James White, Web Coordinator
International Studies & Programs
Michigan State University