Hey, I've just received an email from the MCC team with a subject "Your online community contributions have been recognized by Microsoft"!
What is an MCC? According to its description at the site of the MCC program, "The Microsoft Community Contributor badge seeks to recognize notable contributions to Microsoft online communities such as TechNet, MSDN and Microsoft Community. The value of these resources is greatly enhanced by participants who voluntarily contribute their time and energy to improve the online community experience for others. Each day around the world, Microsoft Community Contributor recipients contribute to Microsoft online technical communities in a range of ways, including providing helpful answers, translating online resources into local languages and serving as moderators."
You can read more about the differences between the MCC and the MVP program in a TechNet Wiki page: Differences Between the MVP and MCC Awards.
If you're interested in becoming an MCC or an MVP, check the following TechNet Wiki page: How to Become an MVP or MCC.