The main reason I tend to stick with GNU+Linux is because of its excellent support for hardware accelerated opengl. The article doesn't tell how the performance is under openbsd. I can play 3d games and have multiple live streams of the olympics running simultaneously, without a hitch.

On a router, openbsd is perfect. It has a great firewall and everything is thoroughly documented. Configuration is simple enough and it just works really well.

Good read though.