Microsoft will do what is best for Microsoft. They always have done what is best for them and they continue to do so. Microsoft takes the best add-ons and features from competitors and adds them to there own software. That is not a bad thing, Apple does it too. It just means that as they do, you have to figure a way to improve upon there new offering.
Agreed. However, Outlook is released so infrequently (~3-4 years) that by the time they could replicate and release the same features that Xobni is offering now, we'll be way ahead of them.
