Well, in this case the information is a JPEG file, so it should look good as a PNG image ;)

But more to the point, there's a guy who stored JS code in PNG images[1], and any binary string could be used instead.

[1]: http://blog.nihilogic.dk/2008/05/compression-using-canvas-an...

I recall something about storing rar archives in jpg files, as jpg ignores trailing bits and rars ignore heading bits..or something like that.