Our colleague at Solid Quality Mentors: Ron Talmage is a writing machine! There's another new whitepaper with his name on it along with Sanjay Mishra from Microsoft.
It covers the performance of database snapshots under I/O intensive workloads. You'll find it here: http://download.microsoft.com/download/d/9/4/d948f981-926e-40fa-a026-5bfcf076d9b9/DBSnapshotPerf.docx
Great work Ron and Mishra!