If you post a picture via a third party site such as imgur / photobucket the site will let you post and then in the background “hoover” ( other vaccum cleaners are available ) up the image and store it on exiges.com automagically and then relink it here.
Reason is sometime imgur/photobucket/whoever change there TOS and we will lose the images.
I am currently running a job on the server to hoover every image it can from all posts , from all time so we dont lose things
Got a few left …