Google+ makes the camera talk topic

You know how Google+ has a new camera permission, right? I discovered the other day that when I Share something to Google+, the mini camera viewfinder slides immediately out of the way (you can't share an article and a photo simultaneously), but a soft rattling noise persists.

When I switch out of the Google+ Post activity (like by hitting my task switcher), an even more audible clicking sort of noise comes from the rear camera.

This is rather eerie. Does anyone else have a talking camera?