Was Yahoo p***d off about people who don't allow some cookies to be set?
That's a serious accusation, did you even care to read the bug before writing that?
FYI, while the deal isn't public, it was rather clear that it was contingent on Yahoo reinventing their search engine as they did.
So you can be confident that it's more likely Mozilla that pressures Yahoo than the other way around.
Besides the bugs, mailing lists, wiki, regular monday meetings, irc channels, etherpads, source code, review notes, commit comments, is all open.
I work at Mozilla there is very little private communication, apart from security bugs, just about everything is completely public.
The notes I make on stuff I work on is in a public etherpad, with links often posted on IRC.. So anyone can could jump in an make a mess of my notes
And you are welcome to participate! (and welcome to ask questions, as well as leaving useful comments, suggestions in my notes)
Also there is no way employees at Mozilla could keep a secret like that - You can be sure someone would blog about it
(Lots of people at Mozilla are in it for the mission)