Uh, I didn't said it is the end of world, I merely asked what Nokia gets in return. I can't see how it can have more users with MS, because WP7 has no users to speak of and even if it gains some in 2012, it will be only because of Nokia brand and it's loyal customers. Besides, last time I checked Nokia isn't advertising company so I don't see the business case of giving away products google/tv/newspaper style. But sure, Mr. Elop wants to differentiate and this is the easiest way to do it. Funny you are bringing this ecosystem thing, because again what is MS adding to MS/Nokia ecosystem? I see no users, no developers, no apps, no manufactures, no carriers support, no maps, no store, ... Everything is either directly from Nokia or is in the "future potential" category that mainly depends Nokia's ability to leverage WP7 with its brand to bring its customers and developers.