To all you firmware conscience people out there, you can use a script from the LibertyBSD project and remove kernel binary blobs in the source tree and compile a libre kernel for and existing OpenBSD install. Then remove any firmware that fw_update install. Fully in line with Stallman, then you down the ports tree and remove all non-free software. LibertyBSD did this but they are no longer making ISO's so you have to do your own thing.