For those of you who teach, Visible Tweets is a fun site to post on your instructor screen while you are waiting for a class to start. The site allows you to enter a word (try something relevant to your instruction, like library or research) and it displays random tweets featuring your word. You can choose from three animation styles and the screen changes colors as the tweets change, giving you an instant, professional-looking visual display.

Warning: There is no filter on the content of the tweets, so you may see language inappropriate for younger audiences – this is not a site I recommend for use in school libraries.