Good point. I admire what Jobs has done with OSX in making it easy for developers to create first class software. Perhaps Xobni is exemplary of this model for Microsoft. An acquisition of Xobni might not benefit Microsoft as much as seeing Xobni flourish independently and be an example of grassroots development that is so prevalent in the OSX community.
If Microsoft has realized that they have cannibalized a large segment of developers (think plankton in an ecosystem analogy) then they might realize that it's better to have more diversity and encourage independent developers to create quality software such as Xobni.
If Microsoft has realized that they have cannibalized a large segment of developers (think plankton in an ecosystem analogy) then they might realize that it's better to have more diversity and encourage independent developers to create quality software such as Xobni.