Does anybody here know how to look up the owner of an email address. I know most free services like yahoo, google, etc want a secondary email or some info in case of lost passwords and what not. I'm not trying to do anything bad here but somebody has been providing information about employees using drugs on the and job and due the anonymous nature of the report it can't be believed or discredited with any certainty. The email is unknown375 at yahoo. I'm not posting a link so it won't get bombarded with spam and closed by the user. I've tried some searching myself in hopes they had used it elsewhere but to no avail. Help?