I was about to update my thread by replacing the broken imgur images, but found out that all of them have been restored. Seems imgur guys have realized that most of their users are from bitcointalk and reddit. I hope there will be no change again on imgur so it saves my time to update all of the unrestored images for my clients. However I prefer to use talkimg instead, at least for now, to avoid double effort if someday imgur makes another joke in future.