This question already has an answer here:
Say I add an image to an answer. It's hosted on http://i.stack.imgur.com/ like all images here are. Then say I remove it from my answer for whatever reason.
Does this image remain hosted by i.stack.imgur.com? I know that Imgur doesn't remove images, but I don't know if StackExchange's version does the same.
The reason why I ask now is because I think an answer of mine with images may be removed and I don't really want to re-host them because I avoid additional work whenever possible.