Anticipate every press outlet will have a lot to say about this:
GrokLaw: "I've collected for you a representative sampling of reactions to the unfortunate Novell-MS alliance. First, my own: this is apparently some kind of a covenant not to sue, not a true cross licensing deal. I think that's how they plan to step over and around the GPL."
Novell FAQ: "Because open source software is developed in a cooperative environment, some have expressed concerns that intellectual property protections could be compromised more easily in open source. Today's agreement between Novell and Microsoft provides confidence on intellectual property for Novell and Microsoft customers."
MaryJo Foley: "Reality check: Microsoft isn't waving the white flag"
Bruce Perens: "The timing of this agreement is significant. Microsoft and Novell are said to have been working on this agreement for some time, and sped up its announcement to take attention away from Oracle's recent announcement and to further depress Red Hat in the stock market... This entire agreement hinges around software patenting - monopolies on ideas that are burying the software industry in litigation - rather than innovation. If we've learned one thing from the rapid rise of Open Source, it's that intellectual property protection - the thing that Open Source dispenses with - actually impedes innovation. And the Novell-Microsoft agremeent stands as an additional impediment."