I dunno if this indicates anything, but one of the former core contributors to ReactOS co-wrote the latest edition of the book on Windows internals published by MS Press.
"You can watch me and David Solomon talking about the book and our history of collaboration in this Channel 9 interview we recorded a couple of weeks ago. David and I coauthored the previous two editions alone, but this time around we add a third contributor, Alex Ionescu. Alex came to our attention back when he was a primary contributor to the kernel of the ReactOS project, an attempt to develop an open source clone of Windows. Alex now teaches Windows internals training classes with David Solomon, including on campus here at Microsoft like I used to do before I joined Microsoft. Needless to say, Alex was a valuable addition to our team on this revision of the book."
(weirdly, Alex's LinkedIn page also indicates that he is now simultaneously employed both by Apple working on iOS (!) and as a consultant on Windows security and internals. Maybe it just hasn't been updated correctly? It's also kinda funny that MS apparently hires outside consultants to teach their employees about the internal workings of their own operating system.)
http://blogs.technet.com/b/markrussinovich/archive/2009/07/0...
"You can watch me and David Solomon talking about the book and our history of collaboration in this Channel 9 interview we recorded a couple of weeks ago. David and I coauthored the previous two editions alone, but this time around we add a third contributor, Alex Ionescu. Alex came to our attention back when he was a primary contributor to the kernel of the ReactOS project, an attempt to develop an open source clone of Windows. Alex now teaches Windows internals training classes with David Solomon, including on campus here at Microsoft like I used to do before I joined Microsoft. Needless to say, Alex was a valuable addition to our team on this revision of the book."
(weirdly, Alex's LinkedIn page also indicates that he is now simultaneously employed both by Apple working on iOS (!) and as a consultant on Windows security and internals. Maybe it just hasn't been updated correctly? It's also kinda funny that MS apparently hires outside consultants to teach their employees about the internal workings of their own operating system.)