When I first joined HNet, it used different software, and up where you see the bold, italic, underline, link, quote etc. buttons in the reply window there used to be one for images. You clicked it, up popped a box where you pasted the image URL and you clicked OK or Insert or something like that. All it really did was put IMG tags around the URL. Back then, I could compose my longer posts in a text editor, including images with IMG tags, and paste the whole lot into the reply window. When the software changed, I found that you could paste the URLs directly, although it seems they have to start HTTPS rather than just HTTP nowadays.