Just got my new Surly cog in the mail.
It came with a small page of information/instructions/disclaimers stapled inside the packaging.
This is the usual sort of thing that I would not even glance at. (How much instruction does one need to twist it on a hub?) But for some reason, I read it.
I don't want to spoil the laughs, so I won't repeat what it said, but I HIGHLY recommend that if you get one to make sure to read it through from beginning to end.