MVC Model Is a ViewModel

Confirmation below that the "model" in the MVC world is not a place for business logic:

http://code.tutsplus.com/tutorials/how-to-write-code-that-embraces-change--net-29716

Our models should be "request models", i.e. dumb data objects used for passing information from MVC to the business logic. Optionally, I see no problem including input validation in the models, but nothing more. Business logic should not be in the models.