Here's a tip for Safari users:
Under the Safari menu is the "Reset Safari" command. Setup its options and use it to eliminate cruft when leaving a web site.

Witness the birth of Ransomware
Not quite malware, not always legit software, Ransomware is someplace in between. More here. Goodbye privacy, hello forensics.

Sufferin' from bufferin'
Is there hope for NevCo residents? See what you're getting with our handy dandy Broadband Buster (below).

Protect your MacBook from spills
Moisture sensors will void warranty, and unibody models are costly to repair. Check out Moshi keyboard covers.

Should I upgrade to Mavericks (10.9)?
No. If it works, don't fix it. Unless/until you have a compelling reason, ignore Apple's nag notice and stick with 10.6.8 or 10.8.5 (IMHO).

Recommended videos:
A Magna Carta for the Web - Tim Berners-Lee (7 min.)
Good Girl Gone Geek - Career advice for women (12 min.)
Art of Web Design - Keep it simple (7 min.)
The sad story of Aaron Swartz - "Internet's Own Boy" (trailer)