CHRIS GAMPAT, THE PHOBLOGRAPHER:
"Every photographer with lots of experience will tell you to take your flash out of the hot shoe, and they’re doing it for more than just the reason of creating a better photo. While there are loads of tricks to get more from your camera’s batteries like dimming the screen and focusing tweaks, not many people know how to get more from their hot shoe flash. Indeed, with a couple of performance tweaks, it can become your best friend.
"We learned these methods after years of trial and error with lots of different flashes, and we think that you’ll appreciate a more efficient and longer lasting flash."
Read more, here.