Me personally, I use all the browsers, each for different reasons.

I use firefox for my day to day activites, especially websurfing.
IE to check up on firefox and do my banking.
I use Opera when I think I am doing too much in Firefox or am visiting risky pages. I use Flock for my social networking and blogging. I just haven’t made it to Chrome yet, and with all my supercool firefox extensions, I may not.

Privacy, is not going to be found at your computer with a service being provided by an ISP that records everything, it is in your head. Main reason I use a handle, VizFact, you get the real name when its justified only, or if you subpeona or hack my ISP. Now if you are signing me over a check, you can have my SSN, lol.

As far as internet marketing goes, I prefer the handle because of all the promoting, posting and social interactions, you just don’t know who you are dealing with. As a professional debt collector, I can get your life story with simply a last name and a city, and maybe a third peice of reference information like a zip code or area code. I always sign out of google when performing search engine queries.

All good tips. I would say a great way for business owners to get noticed is to blog and participate in the conversation that is going on in other blogs. Particularly in their specific field of interest.