We've done some great improvements of gif animations.
They are shown as html-video, that spectacularly dereases their size. Drawbacks are not all browsers support it fully and cpu consumption rises. So:
1) this freature is disabled in Ios, Android and old opera (12.16)
2) you can disable this feature in you user settings (http://joyreactor.com/settings) - option "Remove gif-animation optimization"
3) if you're not registered, but still want to disable it - you can set cookie "showVideoGif2" to value "1". For example, you can do it by executing such code in javascript console:
jQuery.cookie('showVideoGif2', 1, { expires: 365, path: '/', domain: '.' + document.domain });

PS In case you want to copy original gif, link appears in right-upper corner.