Okay, I just had that file open! Where did I save it? Where did it go? Damn. I’m sure this hasn’t just happened to me. If that’s so, I guess Apparent Software built Blast just for me!
Put simply, Blast is a menu bar applet that tracks what files you have recently opened, modified or touched. So if you opened up an image file in Preview, or an iWork document, Blast will keep track of it.