I have to admit they've got a nice enough name. But it's time services stop using the word "free" and instead admit to being "ad-supported" with clear upfront statements about how the business would survive. That kind of honesty would bring in better appreciation from users.
On a related note, free does not necessarily have to mean ad-supported if there are good backers, a good product and a good plan for the future (Trello is just one service I can think of that fits this description).
I wouldn't be surprised to see this happen at some point. Already we're seeing the common app stores show "In-app purchases" next to or instead of the word "Free" to indicate that it's not really free.
On a related note, free does not necessarily have to mean ad-supported if there are good backers, a good product and a good plan for the future (Trello is just one service I can think of that fits this description).