>An interesting post from Craig Berntson, Microsoft to clamp down on MVP bloggers? http://www.craigberntson.com/blog/2007/03/microsoft-to-clamp-down-on-mvp-bloggers.asp
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>There he says : "As an MVP, I was required to sign a non-disclosure agreement (NDA) and can't talk about many things Microsoft tells me. If an MVP breaks that NDA, then he should be dropped from the program."
>
>What does this "NDA" consist of ?


Maybe your question is answered directly further down in the thread but "NDA" stands for non-disclosure agreement. It has a couple of different meanings. The one Craig meant is a document people sign before being shown information (often software) that isn't public yet, promising not to disclose it. Another meaning is a document new employees sign before beginning a job (legally it needs to be signed before starting the job) acknowledging that they will not disclose the company's trade secrets and so forth. There are state by state variations here in the U.S. but typically NDAs must be limited in both time and geographic location to be legally enforceable.