They're portraying Gamestop stores which will buy fairly new, used games from you for pennies on the dollar. They pay you on a value of a game based on how much they can resell it for, the likeliness of it being resold, and how many they already have in stock. Then they take that number and offer you either half that value in store credit, or a quarter of the value in cash. I once brought in 30 games to sell and walked away with only $30 in credit. The highest value for one of my games was about $4.50, whereas almost half of them only got me $0.25 a piece.
It won't at first. Keep in mind that that they also said that all the features are still being developed and will be released in later updates. So the PS4 will be rather exclusive to PS4 games for a while until earlier-generation games are available on the GaiKai network. So Gamefly will still be the better choice for at least 2-4 years after the PS4 is released.
But on the other hand, if you have multiple platforms, Gamefly will be a good choice to have anyway.
Gamefly tries to predict the time it takes for a game to ship from it's shipping branch to your house. Give it another day or so, but if it doesn't arrive after a week from the time it was shipped, send a shipping problem report to gamefly.
The Playstation conference announced that almost all of the PS4 games will be digital, so we can't tell for sure. They may have a download on demand feature though. And we won't be able to tell what the Xbox 720 will be like until it's announced. We don't even know if the name will really be 720.
I've gotten Flower and flOw on dlc before. I can tell you conclusively that Flower does not, and flOw has a hidden trophy where the platinum would be, so I can't be sure of that one. But from what I can tell of these games and their developers, don't count on any platinums at all.