Will let me know about an app from Fabian that I don’t think we ever mentioned before. This app lets you add a button to the menu to mute the shutter sound until you turn it back on. This is not the most elegant solution since you need to fire up this app first and add the menu button. Then select mute and then fire up the camera and take a silent picture. Still it may be better than forking over $3+ for a commercial application that does about the same thing like BerryAnnoying and CameraToGo.
Check it out at this link and let me know what you think. Sadly this is GSM only so no CDMA devices work for some reason.
How you use the app:
You launch it via the icon, then press Menu -> Add MenuItem then you go to your camera app.
Now when you want to mute the sound of the shutter you simply click Menu -> Mute! and after you have taken the fotos you click Menu -> Unmute! to turn on the sound again.
After each reboot you have to add the MenuItem to the Menu again.