Control Your Shutter With The Volume Buttons In Camera+
The process is fairly simple, involving some trickery with your browser and a hidden feature. Be aware, Apple has little tolerance for people who add hidden features that would cause the app to be denied, so this functionality may go away in the very near future.
Here’s what you do:
Just fire up your Safari browser and enter the following URL into the address bar: camplus://enablevolumesnap. Hit the Go button and you should see Safari close and Camera+ load up, except now when you go into the camera mode hitting either volume button will immediately take the picture. Should you wish to turn the feature off again, simply repeat the process but with camplus://disablevolumesnap instead.
[UneasySilence via TUAW]