Taking screenshots for examples, tutorials and the like is not a simple task if you have to do it manually – take screenshot, crop it, save it, upload it – yes all of those steps for just one screenshot!!
But help is at hand in the form of Hpyerdesktop a utility that is designed for doing just the above tasks! It is very lightweight and pretty customisable too to some extent!
I guess the only disadvantage is that you are limited to only upload images to http://imgur.com but, really, imgur is not too bad providing that it is (or was) the main image hosting site for everything on Digg.
As far as I can tell Hyperdesktop is free (and possible still in beta??) and can be downloaded from the concise list of tools for imgur to suit everyone’s needs!