The issue seems to be fixed now anyway, it was actually that art post of yours where I first noticed the problem but it loads fine now..
As for lazyness and thumbnails, check out steemimg.com - after uploading an image it offers you the full html code for a thumbnail linked to full size:
<a href="https://www.steemimg.com/image/XYQDB"><img src="https://www.steemimg.com/images/2016/09/29/satoshireleaseswhitepaper8e304.th.png" alt="satoshireleaseswhitepaper8e304.png" border="0" /></a>
=
One extra click after upload, or visible for anything in the library by going to the image page, then embed codes, "thumbnail image linked", html and copy :)
are you telling me at the ".th" is all I've ever needed to create thumbnails in HTML? I never bothered looking it up because...I'm an idiot. No, wait...you've got 2 urls for the same image. Ah...maybe I'm still an idiot. LOL
This is some good info.