First the pardon will never happen. Neither Obama nor any other President can or will pardon him, lest they encourage the next Snowden. So signing it will not

First the pardon will never happen. Neither Obama nor any other President can or will pardon him, lest they encourage the next Snowden. So signing it will not actually help Snowden. Second, it's entirely possible that your fears will come true - obviously the government will receive your information and they can use it how they see fit. Not only that, but they appear to be running a co-registration campaign with the ACLU, and you don't know exactly who else will get your name, email, and physical address, or who those people will sell it to. I would be also curious to see what kind of remarketing cookies they are using. You can easily be put in the bucket of "HN users that visited the support Snowden page" and be stalked accordingly by advertisers across millions of Adsense-supported sites, Google search, Facebook, and the general web with just two or three remarketing cookies. The creators of this site undoubtedly know that their stated goal will never be accomplished. So this looks more like an attempt to build a marketing database of people with a specific viewpoint than anything else.