There is a big, excellent post from the Features Kinja about formatting posts and what images are displayed where and what services are embeddable. It is a must-read for anyone interested in Kinja, but due to an ongoing sharing issue which I've mentioned before, most recently in a reply to my "Crowdsourcing Kinja" post, it was unshared from here.

Of course anyone to whom sharing is an option are welcome to share Greg's post, but because it was so big and we had had it for a while, I went with a link.