Nice article Chiron
A couple of things of the top of my head, maybe more once I've had time to think
1. There are browsers other than Chromium, it's clones and Firefox
2. You might want to mention flash cookies and DOM storage and methods for blocking, something like BetterPrivacy
Maybe mention etags.
3. An alternative to add-ons for a degree of browser anonymity are 'greasemonkey/scriptish' scripts, a lot of which will run in most of the major browsers. A good example is GoogleMonkeyR
4. A good adjunct to NoScript in firefox is RequestPolicy
5. A good alternative to Cookie Monster, with a few added features is Cookie Controller
is also available for firefox.
7. Make mention of how to deal with making secure financial transactions online. (Possibly a little to large a subject)
8. Maybe some consideration of add-ons that assist with certificate validation, such as Certificate Patrol
9. Don't forget about the command line options in Chromium and about:config in firefox. Opera?
10. Maybe include something about the use of routers and their place in the security chain.
Hope that's ok