James Governor goes into more depth on the Gartner Cease and Desist thing. Here's what Gartner's letter says:

Recently, the following blog post from July 4, 2006 came to my attention: http://www.redmonk.com/jgovernor/index.html. In it, you link directly to the following report: http://mediaproducts.gartner.com/reprints/sas/vol2/article1/article1.html. This report is a reprint which a vendor has purchased for its own use. Therefore, your link constitutes an unauthorized use, and it must be removed immediately.

I tried the link - it's accessible, not behind a paywall or anything like that. If a vendor purchased that from Gartner, then the vendor ought to ask for their money back - it's publicly available information.