I did some user testing with a colleague to make sure he understood how to get a profile for my account . When he went to the home page at livetozero.eagle.io, he ignored the instructions that I put below the title. Instead, he entered his email address and clicked the Login button without a password. This took him to the login page, where there is a Sign Up link. He clicked that link and signed up for a new account. He got confused when he opened up the eagle.io application and didn't see the content that I said I would share with him.
Obviously, the problem is that he signed up for an account instead of requesting a profile from me by signing up for my newsletter. The idea is that signing up for my newsletter and checking a box does two things: 1) it adds a newsletter subscriber; and 2) it lets me know that the subscriber wants to view the content on my eagle.io account. Instead of maintaining 2 separate email lists, I decided to make the eagle.io access request a parameter on my newsletter list...much simpler for me to manage.
I am sure that many other users are going to get confused and do the same thing. Perhaps this is by design, but I just wanted to alert you to this in case it wasn't an intentional design feature.