From Vvcap: VVCap is a tool designed to do a single-click screen capture to web. It is that easy. You can use VVCap for: instant messaging, email, twitter, any other social networking site, when you need to do a quick-post of what you see on your screen. Every image has unique 120-bit URL. In order to see that image, one needs to know the URL. Unless you publish that URL, it is not conceivable to see it by mistake or by guessing.
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