It might not even be login, but the ominous "Login As" button which does not suggest the ability to post anonymously. We recently tested Disqus on one of the m

It might not even be login, but the ominous "Login As" button which does not suggest the ability to post anonymously. We recently tested Disqus on one of the major blogs I work on and our comments dropped by about 60% month over month (where a lot of our users choose to comment anonymously).