If you crosspost articles from Usenet or mailing lists to the wiki, please ask the original author whether they are willing to license their text under our licensing terms (see footer) or release it into the public domain.
Remove email adresses from any material you post and transform the original name into a link to their homepage on this wiki. If people want to reveal their email addresses on their homepage, fine. Example: Alex Schroeder <firstname.lastname@example.org> turns into AlexSchroeder.
Remove email addresses even if you are copying an interesting article from a newsgroup. Remove email addresses even from source code comments. Provide enough headers such that interested parties can use search engines such as http://groups.google.com to determine the email address of the original address (I suggest the name of the author, subject, newsgroups, and date) (I suggest including the Message-ID -- Lars Brinkhoff).
Leave email addresses for mailing lists.