Earlier quoted context omitted.
+1 for "iff" (if and only if), which I wish were more broadly used and recognized in written English
Except it's not used correctly here. "A iff B" means "A implies B and B implies A". "I'd be willing to entertain, or even support, this way of them making money iff they spelled out honestly what they're doing and why" implies both of these: - "If they spelled out honestly what they're doing and why, I'd be willing to entertain [...]" - "If I'd be willing to entertain [..] then they will honestly spell what they're d…
But even playing the game of treating informal language by the rules of strict logical formalisms, it still makes sense. The two elements implying one another would be (1) trusting mozilla and entertaining this new program, and (2) mozilla communicating clearly about their ads. You trust them if they communicate honestly, and communicating honestly garners trust. Makes sense to me.