gkanai

honestbleeps: you should ask at the Addons Developer forums for feedback. https://forums.mozilla.org/addons/

"How do you make your income when it's a free browser?"

Mozilla has contractual relationships with the search services that ship with Firefox. While the details of those contracts are private, you can think of it like this: those search providers make money from Firefox users interacting with their ads, and Mozilla gets a share of that revenue.

You can see the 2010 financials from Mozilla (because Mozilla is a 501(c)(3) non-profit organization in the US) here:

http://www.mozilla.org/en-US/foundation/annualreport/2010/