Ah, thanks for letting me know!
I noticed a little while ago that my images weren’t loading anymore, and I switched to properly uploading or hosting instead. But I didn’t know what was the cause.

I used the links because it was soo convenient, I guess I should have known that this was too good to be true :) Looks like I’ll have to spend some time to at least update all my old posts.
It just goes to show that shortcuts will always bite you in the ass eventually :)