Picture2Cloud is a fast image publishing software. You can capture your screen and publish (or edit) it in a couple of seconds.
A lot of image capturing options + powerful integrated image editor allows you to edit your screenshots on the fly.
You can quickly edit or annotate your screenshots. Built-in functionlity allows to add shapes, text and a lot of other elements.
Cloud storage allows you to save your images and access them when you need. You can change it's expiration date after registration.