Firefox...
I love Firefox. I love that I can install AdBlockPlus and No Script and suppress much (but alas not all) of the snooping these firms want to do on my machine.
No Script in particular is brilliant -- it stops an HTTP GET request from ever going to some parasitical company, so they never know I've gone to a website they hoped they could scrape my data from. I access a website and it never shows on their logs. Brilliant!