Sign in is now a requirement to ensure you are not a robot by using utilities to detect if you are a robot.
You do not need to use your real username and password (and it is actually not recommended that you do).
But if you are new, click the sign up button and create a username and password, then login, your username
and password will be set and saved into the site's local storage, and you can login with it next time.
This is also in place to personalize your experience, especially as added features come in the future!
Stay tuned!
