Most of us know how to tag other users with the @ preface before their username; e.g. @jsbarrett (though half of the tags aimed at me don't notify me because they're spelled incorrectly, but that's another matter). However, once in a while I notice a post where someone is (apparently) tagged successfully without the leading @ ; e.g. jsbarrett . Personally I like the cleaner look of that second option, and am tempted to start tagging that way from now on. However, for the folks who know this forum software behind the scenes, is there really a difference between the two tagging methods? Are there possibly situations where a tag without the @ won't be caught by the parser, or can they be used pretty much interchangeably?