|Status Update without any content|
Recently, facebook added a new feature by which you can tag people, posts, pages and groups using their unique id or username. For example, if the page has a username funstartshereblog you can tag the page simply by adding @[funstartshereblog:0] as a part of your status.
Now Facebook has not registered anyone with id = 0, so if you post @[0:0], facebook will consider that your post has content but when posted there will be no content in your post and your status will be blank. Please note that this trick does not work while commenting.