Wikipedia:Tip of the day/April 20, 2007
How to sign your comments
Signing your posts prevents readers from getting your messages confused with those by other users. On talk pages, it is proper etiquette to sign your messages. To do this, add four tildes (~~~~) to the end of your message. When you save the page, these will be converted to your signature followed by a time stamp. The standard "sig" is your username, but you can customize it under your preferences. To include your signature without a time stamp, use three tildes (~~~) instead.
Read more: Wikipedia:Sign your posts on talk pages