Although we highly recommend registering with Share.Habitat using your Facebook account, it is not necessary. When signing up, be sure to click the link underneath the Facebook registration button that reads "OR Click here to register with an email and password". This will allow you to sign up without using a Facebook account.
Note: You will not automatically have a profile picture if you do not register with your Facebook account. Be sure to go to your account settings page to upload a profile picture.