This paper proposes Message-Oriented NEtworkedrobot Architecture, or MONEA, as an efficient development platform architecture for multifunctional robots. In order to avoid problems occurred in multifunctional robot developments, we design the archirecture to fulfill the following three features. Firstly, it embodies the Meta-Architecture for Networked-Robots. Secondly, it supports Bazaar-Style Development Model. Finally, it doesn't require heavy weight middleware. To realize them, we developed an information sharing framework named Networked-Whiteboard Model along with Message passing framework via P2P Virtual Network. A development methodology using Interest-Oriented Module Groups and Software Patterns is also presented as a means to reduce complexity risks. A middleware is developed as an implementation of this architecture, and we verify the availability and effectivity of our platform through the development of dialogue robot for exhibition.