To mark your videos as private, so that you are the only one who can see them, start your Qik app and select the "Set to private" option before recording a video.

Alternatively, you can go to your videos page and mark your archived videos as private. 

1) Login at www.qik.com

2) Go to 'My Videos' and scroll over the thumbnail of the video that you want to change privacy for

3) Click on the icon to make it locked (private)

You can still share your private videos with your family and friends. Here is how.