In terms of privacy protection, NoScript for Firefox, and AdBlock and Ghostery for Safari are must-have extensions and plugins, respectively. When using public hotspots, I use a home-grown Automator application that changes OS X’s proxy settings to use SOCKS over SSH using public key authentic...
It is easy to add exceptions to a whitelist, but even this requires some understanding of the risks that might be involved. Not for the casual user then, but for web savvy power-users, NoScript is difficult to beat (in fact, even with all with most of its features turned off, NoScrip...
NoScript** (No other browser even comes close to Fx with just NoScript alone.) FlashBlock (not needed if you use NoScript with "Apply these restrictions to whitelisted sites too" in Options>Embeddings) Ghostery* Better Privacy* Request Policy Redirect Remover RefreshBlocker WOT* AdBlock Plus*...