Don't: Force users to come up with a username separate from their email if they aren't going to be interacting with others under that name. (eg. Hacker News thi

Don't: Force users to come up with a username separate from their email if they aren't going to be interacting with others under that name. (eg. Hacker News this is OK. Logging into my bank account is not.) Do: If the username is always the users email, call the field "email" and not "username". (Looking at you, ComEd)