What do you mean, a dead user? I was just quoting from the document, as an example of writing some might find obnoxious. Personally I find it rather entertaining.
No worries. This happens when you 'double post' a comment (usually because HN dies in mid submission) and then delete the original. The duplicate then stays grayed out making people think that your account has been hellbanned.
I'm not sure if you're being sarcastic or not, but yeah, if they got the drone you made, it would be pretty damn easy to find out that it was /you/ that made it.
1) You're manufacturing your own MEMS for gyros and accels [no].
2) Sparkfun started accepting cash at their non-existent retail location [no].
Your drone is a flying dataset full of things pointing at your credit card and your home address.