On some blog posts I've seen images where they have a jagged/torn edge to them on one side which gives it a nice effect. I tried to post a crude Paint.Net imitation of what I am looking for:

The image itself is actually in the black area and the edges are cut off with a bit of a drop shadow. What I'm looking for is possibly a plugin for Paint.Net that would give me a similar effect, or an easy example of how to do this. Since I'm actually a programmer my graphic skills are limited to resizing images and not much else.

