"If you're running SpamAssassin 3.2.x you are encouraged to update you rules (updates were released on sa-update around 1900 UTC Jan 1, 2010)." If you're running SpamAssassin you are encouraged to tell your users to check their spam folders for things they care about.
Some useful tips for using different fonts. I've found that knowing just a little about typography really helps my cause when I'm doing written proposals, presentations, or even the organization's talent show program. :-) (hat tip to Ross Mayfield for the link)
"So at the end of the day, the best defense you have is a competent webhost that will do their part to prevent these attacks from happening. No reason to be alarmed." This is a great example of why sysadmins have to be smarter than app people — the app people always end up foisting their problems on us, instead of fixing it themselves. DoS attack in my app? Gaping security hole? Oh, the sysadmins can somehow magically fix that so I don't have to do any work. They've got firewalls, right? I don't get why they can't just firewall the bad guys out. Sysadmins are idiots! If they were any good at their job they'd be filtering the bad web traffic already. Like, DUH.