Hola Free Video Accelerator is an app developed by Hola that, in theory, makes videos start playing faster and buffer less. In short, it's supposed to improve your overall streaming experience.
Activating Hola Free Video Accelerator is as easy as using the other apps developed by Hola: just hit the On button. When the Hola Free Video Accelerator icon appears in your status bar you'll know the app is working properly.