I've been scanning some of the locations of people who've signed it ..... truly fascinating. One person listed his address as 4 World Trade Center! I guess he's got a personal stake in this!
I also saw a signature from a tiny little town in eastern NC that I'm familiar with ..... population 151. This thing is really getting around ...... :-)
As you go through you will find quite a few Canadians and some Brits too. I even saw one from Germany early on. Haven't been watching it lately though.