Got an Answer - Foxy Cash Cow

When ever I did a search on the Firefox on the small column given for google, the address bar used to append the following string to its constructed URL - &client=firefox-a.
I was wondering for a very long time why this is done on every search.

Atlast I got the answer that firefox is silently making $30m annually for its deal with google. check out Marks post here

Ranjith