People keep saying there's no way "fund Firefox" (because of Mozilla's org structure). This isn't true, and this meme needs to die.
Mozilla is an open source project just like any other open source project. If you want to "fund" it, FIND SOMEONE WHO ACCEPTS DONATIONS AND IS ALREADY CONTRIBUTING TO IT (or wants to start) AND THEN GIVE THAT PERSON MONEY.
I mean geez, Igalia literally exists in order to accept money to fix bugs in FOSS projects, including all the open source Web browsers.