VisceraBowl, you have good, creative Mirror's Edge shots, and it's one of my alltime favorite games.
However, with all due respect, are you using the maximum (lossless) PNG compression level? Even the images that are mostly solid color are showing up about 8MB each for me, and hosted on flickr my lowly connection gets maybe 1MB/second.
Even with the 50 posts-per-page rule, if everyone posted 8MB PNGs, you'd maybe end up with 600-800 seconds (over 10 minutes) to load a single page, even more if everyone started using the three-images-per-post sideways format.
Some editors may have options to use the max PNG compression level (9 I think) which could help. 100% quality JPEG could be another option, if you want to do a test and see if its quality is acceptable.
On the bright side, at least you're not using minus image hosting, where I probably wouldn't even max out my download rate.