In order to determine your Twopscore you need to sign in with Twitter. We need to be able to identify you and have access to some of your Twitter data, more specifically your latest tweets, mentions and replies. Other than the calculations made here, nothing will be done with your account data. If you are signed in, you will see your user name and profile image in the right top corner. Via settings->connections on your Twitter profile page you can always revoke access to your account.

When the calculations are made, and your Twopscore is visible to you, you can decide to keep your score private or public.