SCP is really interesting stuff. Look up UCC-1 financing statement, and check out stopthepirates.blogspot.com if you're interested.
Yes I read the article you wrote, but I'm not sure who exactly to mail the letter to. Does it matter if it is handwritten? What info exactly do I need to include? Do I need to provide a reason? How did they respond? Did you request/receive verification? You may not know this, but do you know if there is/are any difference(s) between canceling your voter registration and rescinding your to vote as a U.S. citizen?
Ohh, so it's Uniform Commercial Code/UNITED STATES CORPORATION stuff. I looked into that pretty in-depth a couple of years ago and found most of it to be bunk--that, and too many folks who advocate those "magic bullet" solutions end up in prison.
As far as the cancellation, here's a link to an example:
You'll send it to your local voter registrar (i.e. mine was the McLean County Clerk's Office) and make sure to include: the date, your name, birthday, the mailing address that is on your voter registration, your signature, and obviously, that you're requesting your name be removed from the voter rolls. Handwritten or not, I don't think it matters, but if you type it up and print it out, make sure your pen-to-paper signature is there.
To your last question, I don't know anything about the latter--the method of strategic withdrawal that I recommend and discuss is just simply removing your name from the voter rolls.
Thanks again and please let me know if you have any further questions.
-Shane