No, this isn't some new spellcheck feature, but it might also be useful... If you encounter someone (some woman) in a forum such as this who seems normal one day, but bitchy the next, all you have to do is let this convenient plug-in search and filter all of that person's previous posts, and determine if there is a monthly cycle of exclamation marks, italics or profanity. If there is, you have successfully detected the relevant period, and can set the tool to ignore that user's posts...