How does it work anyway? I mean, how does Firefox make money? Are they paid per google search or something like that?
And, do they make money if I use forks of firefox and use Google on them?
And, what are the total number of active users for Mozilla and do the forks account into this count?
Just to be precise, Firefox development is lead by Mozilla Corporation, which in theory is a for-profit company; however it is fully owned by the Mozilla Foundation, and all profit is reinvested to the Mozilla project.