[Vaskivo]

Why not go the webm way like 4chan did? (soundless, limited size webm)

[deedubaya]

Lack of IE, Safari (iOS and OS X) support?

[lawlessone]

ive seen webms with sound. i mean heard them..

[Vaskivo]

Webms have sound.

4chan allow webms as long as they are soundless and are, at most, 2 MB. It works as a replacement to gifs.