To get back to the 1x1 pixel thing.
I believe I was the first to use that as a way to fool adult web sites that paid by the click back in 1993. They were crooks that were shaving clicks for banners, so I created a way to make it look like there was someone clicking their banner whenever a page was loaded by a third party. It worked for a while. Had some scripts that would do banner clicks on 30 sites at once with hidden pop-up browser windows that were never seen by the user. A lot is possible, but you need access to the code of the site. Unless 8kun has been hacked, I wouldn't worry about images. Also the anon pointing it out was IP hopping for each post.