You know what would be a cool chat room feature?
The ability to flip on "I'm at work" mode in the chat room, where no embedded images are shown automatically, but they still show up for people who are not in "I'm at work" mode.
Here at Serverfault, it's expected that most of us are working professionals, and since we come from all over the globe, some of us are always at work when others of us are enjoying a hard drink after a long day on the job. Even though it can be nice to be able to leave chat open in the background and be able to talk to fellow sysadmins when you want, sometimes we post goofy pictures in chat. Which is fine, I certainly don't want to stop people from posting humorous or even distasteful images if they want... I'd just like the ability to control whether they pop up automatically or not.