An article explaining the new guidelines is here: http://www.ftc.gov/opa/2009/10/endortest.shtm
Some videos of Mary Engle with the FTC explaining more are here: http://www.ftc.gov/multimedia/video/business/endorsement-guides.shtm
Basically the rules seem pretty simple. I accidentally stumbled upon this information on a blog I follow (Mom-101) and am so glad she posted the information so wanted to pass along the favor. None of my posts have been sponsored but I would really be in a bind if I didn't know the rules and got into that side of blogging.
(This was not a sponsored post)