seems arbitrary
Generally, on the internet, it's considered bad form for a blog to "hotlink" photos and such (put a link directly to the original site's photo URL), and instead they download copies onto their own sites for such links.
Yeah, but we can't do that here. And isn't that the point of the HZ html guide to using "img src=..."?
Why does that html work here most of the time, but not all the time, like now? Is it due to a traffic problem as you seem to say?