Things to consider when creating a username:
- Must be between 3 and 100 characters in length.
- Can contain only letters, numbers, underscores (_) and hyphens (-).
- Must start with a letter and end with a letter or number.
- Cannot contain more than 20 underscores and hyphens combined.
Things that you should not include in a username:
- Obscene or profane words.
- Someone else's intellectual property.
- Personally identifiable information, such as date of birth, telephone number, etc.