I am using a pseudonym for my online information product. The pseudonym is a pretty common, unremarkable name. Recently some guy with the same name emailed me, accusing me of creating a fake online persona using his name. I can't see why this would be a problem, but I just want to make sure that I'm not breaking any laws. I'm obviously not claiming to be him or using any aspect of his identity apart from the (very common) name. Any thoughts??