&pws=0 Firefox Plugin
If you’re like me and are forever apending your searches with the query string addition &pws=0 to ensure that you’re seeing googles unfiltered, unpersonalised results then you probably need this plugin.
Close Firefox, unzip it and run the EXE.
Now and forever more searches will be appended with &pws=0 automatically.
JOY!
Credit Michael Duz
There’s also the open search plugin from Yoast that gives you de-personalised search as an option in Firefox
http://yoast.com/google-de-personalized-search-for-firefox-and-ie7/