The patent, named "Hand gestures to signify what is important", looks to allow users to use hand gestures to perform various actions with a head-mounted display (HMD). The patent doesn't mention Google Glass, but obviously has that sort of technology in mind. There are quite a few uses described in the patent, including using a heart-shaped hand gesture to like something, or framing something with your fingers to select it.
We would hope that there would also be a thumbs-up option for those uncomfortable with the heart gesture, but the real star of the patent is actually the framing mechanism. By using your hands to frame something, you can take a picture or video of that specific region without having to line up your body properly to frame the camera in the traditional way. That would definitely be a cool option for Glass. Once you take a picture or video you could then use hand-gestures to send that media to a social network.
There's no guarantee that we'll see this hit Google Glass, but it is definitely the prime target for functionality like this.
source: USPTO via Engadget