I recently started using them and they add a nice touch to your browser. By simply going to the Personas website, you can simply glide over the wide variety of available “personas” and see the instant change (*w/plugin). There are quite a bit of categories so you are bound to find something you are interested in. Once you are satisfied, simply wear it with style. If you aren’t satisfied, you can even make your own, or make Talk Binary one mind you.
Below is a video that explains this to you since lots of people like seeing stuff explained with sound and moving pictures.