Continuing the discussion from Poll: Book Club Round 2 - The Mutants Decide - VOTE HERE:
When I upload from an image on my phone, they appear to me – and AFAIK the link looks normal – but they aren’t visible to others.
Nor to me when I view the post from desktop.
<img src="//discourse-cloud-file-uploads.s3.dualstack.us-west-2.amazonaws.com/boingboing/original/3X/5/3/53f86268120ce30f39d6516f8dbec39f15611fd0.jpg" width="384" height="500" >
(original has been edited from the desktop to replace the photo)