Facebook profiles use names that <i>look</i> reasonable, but they aren&#x27;t necessarily real names.<p>I have at least three friends who don&#x27;t use their official names in normal life, and have Facebook profiles under slightly modified versions of their names [1] to make them look &quot;normal&quot;.  (Contriving an example, change &quot;Tall David&quot; to &quot;Taal David&quot; and everyone that knows Tall David can work it out.)<p>[1] name = what they call themselves, as far as I&#x27;m concerned