Yes, I've used it!
I used it... People who have MLB app or NBA app can be blocked from watching some games due to blackout rules. I'm in NY and couldn't watch NY Knicks basketball games... Live or replay... The Fake Location app works just like 3G unrestrictor where you select which apps you want it to work with, so for the NBA app, I chose to fake my location in Texas. Once that was done I was able to watch both live games and replays of NY Knicks games. I suppose you could trick location sharing apps to show you were in a different area, too. I'll do more testing with it today and will post it on here.