Ticker alerts on Facebook (on the right hand side) are really annoying to some people. Facebook introduced them in one of the latest design changes. If you are wondering what I’m talking about on the right-hand side of your main Facebook page the top column is full of the latest updates and likes from your friends and all Facebook pages that you have liked. This column is constantly being updated and sometimes it can be annoying to focus on things that you are doing on Facebook.
Although there are many browser extensions in Firefox and Google Chrome that you can use to hide or disable ticker alerts this would be an overkill especially when you can do it by simply clicking this icon:
A good thing about using the inbuilt Facebook icon to hide the alerts ticker is that you can easily unhide it by simply clicking the icon that now appears in an inverted position.