How does adding ads "insult, mislead, or deride their users"? This whole discussion is silly. 99% of the users will keep happily using the service with ads. They were smart enough to know they were coming eventually. A 1% very vocal minority will piss and moan on internet message boards about how pissed they are and how absurd it is that this coming isn't continuing to give away a nice service.

Everyone bitched when Facebook added ads, but guess what, they keep growing and people keep using it. Shocking.