Three things I like about stackoverflow (and stackexchange in general): the license currently used (cc by-sa 3.0 with attribution required), and the abscence of registrationwall. Interesting Q/As related to the difficulties of having floatting point operations repeatable across platforms (CPU/OS/Compiler): Interesting documents related to the C language: Interesting documents related to software licensing: Interesting documents related to memory, caches: Interesting documents related to floats: Related to structure packing: ©