MCE is incredibly powerful, and offers a number of different models to approach parallel tasks. In many cases there is both an OO and a traditional interface. All this power and flexibility can make it difficult to know how to implement the toolset in your app. Luckily, the author marioroy can usually be summoned to these halls to provide assistance.

(That is, I suppose, one of the pluses about the fact that MCE and MCE::Shared are so far not widely known. As you no doubt know, the authors of similarly scoped toolsets tend not to be available for one-on-one support. I don't imagine it can stay that way forever in the case of MCE either ...)