Maintaining aspect ratio

Here we are in 2010, a good bazillion years since the advent of the internet. Image editing has become a thing of the masses, what with everything from the iPad to Photoshop Elements making it easy to resize, recolor, and otherwise manipulate photos. So you’d think that something simple like resizing an image would be part and parcel of the repertoire of your average Joe, much less a web professional.

Unless, I guess, you work for the Gizmodo Department Of iPhone App Thumbnail Rendering And Posting.