[bobsgame]

Names are really hard and I cannot suggest a better name. Since you provide more than just gif conversion, it is appropriate. The URL is a bit hard to type, though it does have some novelty to it. If you already have momentum you should just stick with it. I can only say that gfycat has a cute name that is more memorable, which is why they will gain momentum on a site like Reddit.

The beta tag is a big red marketing thing that makes it feel like a Google service and makes people feel like they are using something cutting edge. It looks good. People like certifications and symbols and affiliations and logos, it makes things feel official and valuable. You can always be in beta as you are always adding features. You could put a bunch of Github and Open Source and EFF logos then if you want to play up the open source aspect, most average Reddit users won't care but it will look cool.

The "bandwidth saved" thing is a gimmick and nobody will even think about what it means, it is just a big moving number on the homepage, like the storage space thing on GMail. It makes it feel alive and valuable. So don't focus on the fact that it's useless, you'll get frustrated. Try to learn from the marketing significance of it.

I think the theme switcher isn't too important. Just make it more stylish and keep pushing, add account management, and you will surely continue gaining momentum. You have something great!