It is also possible to have the thumbnailed image also display full-scale in a post if the poster knows how to get the full URL that the PoA website uses to display that full scale image. They then need to copy that URL into the "Insert Image" dialog. Result is that an extraneous thumbnail image appears at the bottom of the post while the full image also appears in the body of the post. But so far as I can tell you can't get rid of the thumbnails for the uploaded images.
When I upload I sometimes leave just the thumbnails for people to click on since that allows the reader to decide if the image is worth the bandwidth to view. And sometimes I force the full scale image on unsuspecting readers.
