Picupine is a temporary photo-sharing site where you can upload photos from your computer, click submit and get a hidden link to your pics which you can email friends/family!

There's no sign-up, and, your link will stay active for a full week, and then automatically expire.

While it wouldn't be good for someone who likes to bookmark albums, and, go back to look at them later, it might be handy for a situation where you just need to send photos securely, easily, and, to be used for short periods.