Paul Dunny has an extensive set of links to the twitter accounts of C.x.O. level executives. He also gives links to feeds that break down CEO, CMO and CTO/CIO twitter posts. A very nice resource if you are interested in what many top business leaders are saying.
Information Week is running a story that credits the recent and rapid increase of Linux PC offerings to the rejection of Vista by users. It seems that Vistas troubles have opened the door for inexpensive solutions built around Linux. It seems to me that this would also be an indication that rather than Apple killing Linux, this shows how they can complement one another as Apple is not competing in this low-end space.