There are lotsandlots of posts about MEST lately. Savas has done some super work in evangelising the MEST architectural style and though our recent paper was rebuffed, it seems that MEST is starting to gain a life of its own outside of our work (well, at least for me our ex-work).
MEST rocks. It is essentially an embodiment of the SOAP processing model and is inherently good for Internet (not just Web :-P) scale computing.