Hacker News Reader

Gifs work everywhere. They're heavy, but support is pretty much guaranteed. That's still not the case for webm.

If you're OK with screwing over Safari/IE users, you'll have pretty good support. You could engineer a browser-based fallback to gif, but honestly I wouldn't bother.

I'd imagine we can create an impetus to support it if we actually used it more

Reply on news.ycombinator.com