Tips for Better Signup / Login UX
A couple more:1) Do not limit the length of the password to some arbitrarily small number.2) Do not validate email beyond the simplest, "includes an @ and a period. Email is validated by sending a confirmation link.3) Don't get so stupid with the "secure password" special character crap. Some of us use super long, but memorable passwords, which are more secure than your bull#@!+&$