I bet you and I liked the Edge for similar reasons. : ) We are both software developers (I'm a Systems Architect but I still just like to call myself a programmer) and some of the technical docs and specs can get huge. I have around 15 development books on here so far (From ANTLR3, DSLs in Boo, C#, across the gamut to F#), PDF print outs for tech and requirement specs, web pages, etc. and I love it for taking notes during meetings.