This is the way it has always worked. first, you need a place on the internet that allows hotlinking (like photobucket), the you take the html code ( something llike <img src="http://yahoo.com/imageofsomesort.jpg"> ).
Now that you have the url in this form, click the "<>" buttons which shows the html code and paste it in. Like so:
Once you do that, you should see the image work, even before you post it.
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