Fullname vs username and how to ask for username after Social Login

1. Should my username be my full name?
2. What is difference between username and account name?
3. What is username example of username?

Should my username be my full name?

If you need an account on a site that you don't want associated with your online reputation, don't use your real name or a common derivative of it. You want to avoid having a Google search of your name lead to these profiles. Try to pick something completely unrelated to your name that you'll be able to remember.

What is difference between username and account name?

That said, your profile name is the name your friends and other Facebook users use to identify you, while your username is your Facebook handle. It's the name that's used to customize your profile URL.

What is username example of username?

Generally, it means a username is a short form of a user's full name and surname. For example, the name of a user name is John Smith; he may have the username site, which may be created with the combination of the first four letters of the alias or last name followed by the first letter of the first name.