I haven't been able to put pictures in my answers, and I cannot see any pictures posted in other people's questions. Is this an issue on my end, or is imgur having issues?
This is an issue on Imgur's side: see Is stack.imgur currently down?
I don't have an update on this other than being more than a little angry with the state of things and that I'm working with Imgur to ensure they get it back online ASAP. – Nick Craver♦
As a workaround, use 1000 words: they render independently of Imgur.