People from outside of a state are signing the petition of another state to secede. Shouldn't you be within the state that wants to secede for the petition to be valid? I'm not convinced that the petition on the given link are valid means of secession.
Update: Come to think of it, I think these secessions need to happen at all of the individual states level and not at the federal level.
It is better to look dumb and not be, than to look smart and not be.