This is one handy little app. We all heard how web applications were going to take over the world, but we really haven’t seen too much, other than [Hot|G]Mail or perhaps Bloglines.
This is a handy viewer of PostScript, PDF, or Microsoft Word files. It’ll change them all automagically so that you can view them in your browser. I find this handy when I’m on the road or a public computer without Mircosoft Word or OpenOffice installed. The source is downloadable, so I might just set this up myself. Onto the YAP list it goes!