Privacy features in the change.org site are nice. You can hide your info. I was even able to change my screen name. (Make sure to use your real name for the petition - they allow you to swap back and forth.)
A physical letter to the DRMS is still the "better" option, but you better FedEx it at this point. A letter sent Monday to the Denver office might make it, but there's risk involved. On second thought, I forgot who I was talking to - plenty of time!
The petition is a good thing to link on Facebook. I don't give my friends risky stock tips, but this would be a great chance to intro the company, just to have on a watch list.