Imgur has been blocked in the UK which is ridiculous since it was such a useful tool for linking to images where you can't upload them, and now there doesn't seem to be another popular way to do that
Upon searching I found imgbox which seems to work well and doesn't require sign-in. What other alternatives are you using and which ones are best?
Hopefully this thread can help people looking for an alternative and give them another site to use in the wake of Imgur getting blocked
Edit: Imgur hasn't been blocked, but they've chosen to remove their site from UK access in response to the Online Safety Act