Inquisitor Lord Elias pointed out that clicking images in an archived thread didn't work properly; I'd made a mistake when rewriting the URLs to local files, so while the images were properly stored, they weren't being properly referenced. I've fixed it, so all threads should now properly show the full-sized images if clicked in an archived thread.
Any new threads and any threads still live on 4chan have been fixed on update, but some of the expired threads need to be manually fixed. I'll be doing that with a simple find/replace in a moment, but if you find a thread that's not working right, email@example.com or just post it in the chat on the left.
Speaking of which, I'm going to be adding a way to remove it if you don't want to see it on the sidebar on every page, so if it annoys you, you'll be able to turn it off. Nobody's actually complained yet, but I'm sure it must be annoying someone out there, and the damn chat isn't smart enough to log you in only once if you've got multiple tabs.