Thread:Thisismyrofl/@comment-24323757-20140101133806/@comment-1330470-20140101181131

If we're discussing the welcome message that is sent to new editors, there are four:
 * Mediawiki:Welcome-message-user
 * Mediawiki:Welcome-message-wall-user
 * Mediawiki:Welcome-message-anon
 * Mediawiki:Welcome-message-wall-anon

There are two for regular users and two for anonymous users (IP addresses), depending on if your wiki uses message walls or talk pages.