XBLA Primer: What is MOBA?

"While everyone knows what strategy games are, and role playing games, and massively multiplayer online games but somehow the multiplayer online battle arena genre remains confusing and mysterious. Perhaps this is because, despite being a combination of strategy, RPG and MMO (aka SRPGMMO, but nobody liked that acronym) being something everyone can understand, it in no way adds up to MOBA. However, like every other genre, MOBA is branching out, growing and adding elements from other beloved genres, so before things get out of hand let us explain what MOBA is."