The browsers
There are advantages and disadvanges with all the browsers:
The one that i won't use is Chrome! Imagine..., you can walk in the street enter some store, chat with friends, well, that's the street, it's a public place, maybe someone follow me and take note of what I do and say!. Even in public places I won't like to be tracked. But, if I'm at home I won't resign to my privacy.
There are alternatives to Chrome: SRWare and Chromium FreeSMUG.
Opera v 11, is a very good one, It's fast, really customizable, but, it's not much intuitive. I think it wil become more and more powerful, maybe it will become the best browser. maybe!
FireFox, has always been my alternative browser, customizable, but even less intuitive. Version 4.0 it getting much better. It has the best plug-ins.
Safari, is fast enough for me and stable, hmm not customizable, It's my main browser, because it share the same user interface with Mac OS, obviously it's Apple's. I really can trust Safari.
So, for me, I use Safari, Opera, and FireFox.
And of course, I use ClickToFlash, Ghostery, AdBlock, and everything that guarantes my privacy or surf more smooth.