On a related note, I think screenshakes are extremely overused in indie games. It's so cheap to add that it cheapens the games.
- Threw a grenade? Boom. screenshake.
- Shot a bullet? Boom. screenshake.
- Picked up an item? Boom. screenshake.
- Let out a big sigh? screenshake.
- Physically shook your display? Double screenshake.
- Rolled your eyes at all the screenshakes? There's a screenshake for that too
In StarCraft, the screen didn't shake even if you dropped a nuke on someone else's base. I guess the good folks at Blizzard at the time didn't watch that one GDC talk, "Juice It or Lose It", so they had to come up with a different way to make a good game.