Well, only a handful users and no ratings/reviews... Thanks, but I'll pass for now. 
And if you are a Firefox user, it does nothing anyway (Fx does not support the cache control headers).
Strange how they can advertise it as such.
Boostaler is a browser extension for the Mozilla Firefox and Google Chrome web browsers that is designed to speed up web browsing by extending cache periods. The extension may work with other browsers based on Firefox or Chrome code as well.
There was me thinking that the user could set the caching in firefox. Well more of not clearing the History when closing firefox, presumably this would clear all caches ?
Personally when I close firefox I have it clear