NetBSD At Linuxtag
Dan writes "The Linuxtag in Karlsruhe is the biggest Linux event in Europe, and of course NetBSD was present there too! The event happened in two buildings, one for the conference, and one big exhibition area. A group of people from BSD and related projects have setup a joint booth to present NetBSD, FreeBSD and OpenBSD as well as OpenDarwin, OpenSSH and MirBSD. See Hubert Feyrer's full report for more details."
http://templeofhate.com/tglaser/MirBSD/
Though it doesn't explain a lot. Looks like OpenBSD optimized for gcc 3.3 and -march=pentium, with some package and small kernel changes. Doesn't seem to have a unary guiding principle. Anyone else with more info?