QipShot is a multi-purpose application for Windows. It allows you to capture snapshots of your screen and upload them to the QipShot servers. It also allows you to upload any Images from your computer to their servers and retrieve it later.
The screen-capturing part of the application is perhaps the most complete one. QipShot can capture the whole desktop, an area of it, or any active window. It can also capture video, so it doubles as a screencasting application.