Many online bulletin boards require users to be signed to write—and, in some cases, even to read—posts. 2channel and other Futaba-based image boards take an opposite stance, encouraging the anonymity, and in the case of English-language Futaba-based websites, calling those who use usernames and tripcodes "namefags" and "richeys", respectively.[21] As required by law, even communities such as 4chan do require the logging of IP addresses of such anonymous posters.[citation needed] Such data, however, can only be accessed by the particular site administrator.