For those of us who use Facebook, Google, and operate the number one operating system in the world, Microsoft (i'm a Mac OS user :) ) here are their security blogs that provide much needed information on how to set their security settings and keep them updated:
https://www.facebook.com/security?sk=notes
http://googleonlinesecurity.blogspot.com/
http://blogs.msdn.com/b/securitytipstalk/
Darren
The Digital Sheep Dog
