Booster Page Speed Optimizer

I first thought this looked like a great app and it definitely improved my speed. Unfortunately, it also removed half the content from my home page (and I tried twice turning on and off the app with copies of my theme and the same thing happened).
I tried contacting support but received a note back saying as it was a free app there is only documentation support.
It might be a conflict with something on my site but I would definitely recommend you take a copy of your site just before adding it and check your site carefully after adding.