I managed to get some time and thoughts after a long break. Thoughts are about scalability of enterprise mashup - mashup grid.
Space based architecture [SBA] can be followed to make mashup development platform grid enabled and thus more scalable , available which is MUST for any enterprise ready products. There are few nice blogs from a vendor on SBA.
Mashup grid powered with Functional programming driven declarative mashup development paradigm can be solution for providing a enterprise environment for "Situation application".
More blogs will be coming soon.....