Finished reading the Prags new C# testing book yesterday. It's very good. I found it easy to read. They say it's designed for onscreen reading, and it is if you use Acrobat Reader 6. Then it's very readable (5 blew goats, so I upgraded). The type face is a serif*, and it ascendent and descendent strokes are quite narrow, but that's ok. They contrast strongly enough with the background. The code samples have pretty colours, and are in a very readable tiny-text. Overall, the book looks good online. No need to buy a print copy. * Yes, everyone does this, but please, consider using a sans-serif font onscreen. PDF sans serif looks really good since I upgraded the reader....