szoter - online annotation tool

"szoter is easy to use, free, online image annotation tool. It makes expressing your ideas and thoughts easy. It can be used to share your ideas with friends, highlight important parts of images or even to create readable bug reports. You can use szoter, to manipulate images loaded from your harddrive or downloaded directly from internet. Want more... annotate images captured with your webcam or simply, take a screenshot of your desktop" 

It goes on to say that you can:

• Capture Your screen
• Capture Your mood via webcam
• Load local & network images
• Scale & rotate any image
• Annotate with lines, rectangles, circles, arrows
• Quickly sketch any shape
• Add text comments
• Adjust colors, outlines and size
• Easily crop Your workspace
• Save and share with friends
• No login nor registration required

There's a bunch of these resources out there, but this looks fast, easy and effective, although to be fair, I'm just going on what they have said, rather than having tried it out myself. If anyone gives it a go, please let me know what you think.