Now if you spend a lot of your time searching the net then this Firefox add on will be of a lot of help.
Most search engines when searched for a string will result in jumble of different kind of result with the same string, hence this add on makes weeding out the unwanted results a click away.
It works on pretty much on all major search engines. After doing your first search, if you select a tech a dialog box appears with + and minus which cause the search engine to either add the text or filter out the text on the next search.
A good example would be when you search cars and you are
There is a good enough video tutorial
Earlier we have wrote about the various add ons in FireFox