The server coreybryant was using to host screenshots is now access restricted. Due to intentional change, or misconfiguration, or changing of hands, etc... Maybe the domain expired. Or a change was made to the server, without remembering that he once used it to host inline images posted to a TCF thread in 2012.
All the inline screenshots that coreybryant posted, such as:
when loaded inline, will bring up a userid/password prompt for said server.