The good news is, it's just as easy to post an animated gif video as it is to post a jpeg.
The bad news is, it's harder to create an animated gif than a jpeg.
But, if, while surfing, you happen to come across one you'd like post (e.g., this one of a Bolivian officer checking Ché's post-mortem reflexes), the technique is exactly the same: Just pop the URL into an IMG tag ...
<img src="http://www.hasharat.co.il/images/news_181_CheTickle.gif">
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