Having been messing with Issuu for a bit now. It is a web based PDF viewer with a really nice interface. And like all good apps these days I can embed the PDFs anywhere. For those people reading in RSS and unable to see the flash embed here is a link. Be sure to hit the “open publication” button on the widget and check out the browsing UI. Try out the grid mode too.

I am going to play around with using issue for magazines and PDF based manuals. Hell, maybe even presenting story boards and wireframes.