Strangely the bug does not seem to appear anymore sorry I cannot give you more info on this now.

A clickable link or maybe a button with an image representing "Go to" action!

Storing images forever seems really hard and costly wouldn't it? Especially if you don't limit the original image size or resize it on your server.

For deletion of the image a solution could be to do like doodle.com. You provide one "administration link" where the uploading user can resize/crop/change the image, and a "publishing link" that he can provide to over people to see ?

A quick share through twitter/FB/G+ etc of the image uploaded could be nice too and help spread the word!