Username or Email Address
Anonymity has been a vital issue since the very emergence of the Internet. Though anonymity is not something that was invented with the Internet.
People always resort to it in order to achieve various goals, such as to hide their real names, obtain a more unbiased evaluation of their messages or creations, protect the privacy of people in scientific studies, etc. This issue has gained more attention due to a spread of social networks and online services, which has prompted governments in many countries to adopt laws that both protect anonymity in certain circumstances and require disclosure of personal information, while explicitly forbidding anonymity in other situations.