When you hover with your mouse over a gfycat link you'll see the video popup and play. Much like HoverZoom for a gif.Pros on reddit don't click, they hover. This works for all images including gifs but not gfycat gifs. That's what this extension is here to solve until hoverzoom officially supports gfycat. When you hover with your mouse over a gfycat link on reddit you'll see the video popup and play. Much like HoverZoom for a gif.
I recommend you test it out at http://www.reddit.com/domain/gfycat.com
Source at https://github.com/ubershmekel/gfycat_hoverzoom