Thanks for your response on my talk page  The identity of the anon editor is this case is pretty obvious since the author of the vanitypress Rydberg books posts from those same IPs under his real name on a number of Internet fora invariably promoting Rydberg and his books  Hes simply trying to drum up more sales by preventing any balanced assessment of Rydbergs work in the Wikipedia article  Before I try to involve more editors Id like to know whether its permissible to look outside Wikipedia to determine the identity of an anonymous troublemaker like this