CPU and Memory Scalability for Exchange 2000 and Exchange 2003 – Interesting, especially the part about /nopae
November 2004 update rollup for Exchange Server 5.5 – Updated today!!!
Exchange Special Mailboxes Part 1 – System Mailbox
Phishing guide – Free and very interesting
Anti-Phishing Group website
PayPal Phishing, I have actually gotten a few of these: