This is a facebook app / website, that will take your profile picture (or a friends) and make it into a drawing. It works pretty well, the result is better than I anticipated. You have to login to you facebook account to make it work, which makes sense, how else should it be able to get your profile picture and sketch it.
I have tried sketching Pudge from DotA and Scarlett Johansson, both turned out pretty well, considering it’s an app doing the job. Results may vary, if you have a low quality profile picture, if it’s too dark or light, your result probably won’t look that good. But try it out, it can’t hurt.