[CydeWeys]

Clearly some people are.

I once posted some random photo on Imgur to share with a larger group of friends, and I guess I left the display option set to the default of public. Next thing I know, I get a comment from an Imgurian who found it through the Imgur image listing saying something like "What is this? Why did you think I would care about this?"

[AMerrit]

Yeah I've uploaded stuff in the past to imgur for sharing on reddit and come back later to some very strange comments.

[TheCapn]

Its super common. The imgur app has it shared to the public gallery by default and you need to mark it "hidden" manually each time you upload.

If you browse imgur's New gallery you see images posted by mistake all the time.