For me personally, I don't really like the thumbnail type pictures you see of people trying to add me on Facebook and I in truth I don't feel like clicking on their picture to find out if I actually do know them before accepting after the fact that I don't recall their names. I'd like to say; I am a lot better with faces.

So, here is this new JavaScript tool/extension on Google Chrome or Mozilla FireFox made by Regis Gaughan, III  that would solve this for you. It's as simple as hovering your mouse cursor over the thumbnail and presto! You would see the orignal image in its actual size.