E já que na outra dica falei do Opera, chegou a vez de falar sobre como proteger a sua privacidade nos navegadores Google Chrome e Chromium.
DuckDuckGo for Chrome.
https://chrome.google.com/webstore/detail/duckduckgo-for-chrome/bpphkkgodbfncbcpgopijlfakfgmclao
Ghostery.
https://chrome.google.com/webstore/detail/ghostery/mlomiejdfkolichcflejclcbmpeaniij
Adblock Plus.
https://chrome.google.com/webstore/detail/adblock-plus/cfhdojbkjhnklbpkdaibdccddilifddb
NoScripts.
https://chrome.google.com/webstore/detail/notscripts/odjhifogjcknibkahlpidmdajjpkkcfn
Disconnect.
https://chrome.google.com/webstore/detail/disconnect/jeoacafpbcihiomhlakheieifhpjdfeo
DoNotTrackMe.
https://chrome.google.com/webstore/detail/donottrackme/epanfjkfahimkgomnigadpkobaefekcd
HTTPS Everywhere.
https://chrome.google.com/webstore/detail/https-everywhere/gcbommkclmclpchllfjekcdonpmejbdp
Click & Clean.
https://chrome.google.com/webstore/detail/clickclean/ghgabhipcejejjmhhchfonmamedcbeod
AVG Privacy Fix.
https://chrome.google.com/webstore/detail/avg-privacyfix/pmejhjjecaldkllonlokhkglbdbkdcni
E nas preferências do navegador…

Veja também:
Alguns dizem que anonimato e segurança são meras ilusões, mas penso que quanto menos nos expomos: melhor!, abaixo vejam o site do jornal O Globo:

Referência.