True, but there are ways you can do something similar on a blog. If you link to the blog post from Twitter, I think that becomes a simple confirmation that the

True, but there are ways you can do something similar on a blog. If you link to the blog post from Twitter, I think that becomes a simple confirmation that the person wrote it. Or, given this is Snowden, he could GPG sign his blog posts and post his fingerprint to Twitter or something to verify identity.