Here's another useful bookmarklet you can use in Google Chrome as well as Firefox. It let's you capture screenshots and edit it before saving. You can also add texts, arrows, draw, change colors, move, crop, resize, flip add effects much more like editing images in those photo manipulation softwares. When saving you can choose whether to save it on your desktop or save and host it online but you have to register for an account to do that (registration is absolutely free).
