Earlier quoted context omitted.
http://gfycat.com/ has been gaining popularity on reddit lately. Links allow you to pick gif or html5 video. Example: http://gfycat.com/GlisteningBruisedClingfish
No no no no no ;_; I made this website, use it instead: https://mediacru.sh It also does HTML5 GIFs and has a fallback for phones and such. BUT it's also open source, much higher quality, more featureful, and supports more than just GIFs. Even though MediaCrush and gfycat started around the same time and MediaCrush is much better, I can't seem to get people to use it more. I guess our users are less evangelical.
Your site requires some nits & bits of polishing here and there. Make it more fancy.It looks like any other github project. The page of gfycat is very minimalistic,only fetch url and upload file no fancy drag an drop or documentation or api stuff. Talk to some 4chan & reddit users for some pointers ,they will gladly(I have done my part ;)) Sorry for the harsh word.Nothing but suggestions.