You do not need to login or register an account to use Metalhead Match. Users who are not logged in can do almost everything that registererd users can do! However there are a few differences between registered and non-registered users, here are the main differences:
Tip: You can transform a non-registered account into a registered account by registering an account while using the site with your non-registered account. All of your personal information and pictures will automatically be transfered to the new account. However your conversations and favorites will not be transfered!