I'm sure that most members are probably already aware of this site...but there might be one or two that aren't

...so...

ITPapers is the Web's largest library of technical IT white papers, webcasts, and case studies. Covering IT categories including Data Management, IT Management, Networking, Communications, Enterprise Applications, Storage, Security and much more, ITPapers.com is the best source for technical white papers and IT information.
http://www.itpapers.com/
White Papers, Webcasts, and Case Studies - ITPapers