Both the DNS servers on which bdsmlibrary.com relies are currently DEAD (or rather, their own DNS entries have disappeared, rendering them unreachable), and have been for a few hours at least.
Since the main webserver here is running Linux, it seems odd to rely on guihosting.com's clearly inadequate service when installing tinydns and configuring upstream glue would give a far more reliable service to us all - in exchange for half an hour's admin time to set up, plus a few megabytes of space. That way, the domain can only be down when the webserver itself is down anyway - much better all round!