This story (http://thinkprogress.org/lgbt/2015/07/03/3676827/facebook-transgender-real-name-policy/) illustrates how even using your legal name can be incredibly difficult on sites banning all but ‘real names’. Facebook’s policy in particular has also caused many users to lose their Facebook accounts (http://www.theguardian.com/commentisfree/2015/jun/03/facebook-real-name-policy-hurts-people-creates-new-digital-divide), including feminist groups, trans* persons and drag kings and queens known for their pseudonyms rather than their legal names. If you choose to use a pseudonym on some social networking services, it is important to understand that you can be reported for using a "fake name," and possibly have your account deleted. A strategy for avoiding that can be to use a name-shaped pseudonym so that your account is not automatically picked out as problematic by services like Facebook.