calling me stupid for not finding the signup button shows that you don't understand the issue. it isn't about intelligence, it's about user experience. when i want to sign up for a website, i don't try to do things that i can't do without signing up so i can then get redirected to a signup form. i look for the signup form.
the signup form should be accessible in one click from the front page. common sense.
the signup form should be accessible in one click from the front page. common sense.