FishVille has players swapping Super Grow and Caffeine for Sand Dollars
FishVille began retiring Super Foods yesterday. Introduced five months ago, these were essentially fish steroids. To get them, the game sometimes awarded them to players for free. They were also available for purchase at the in-game store for 1 Sand Dollar (premium FishVille currency) and could be sent from the gifts page.
When you log-in, you should get a pop-up notice that'll allow you to cash in your leftover Super Grow and Caffeine for Sand Dollars. Five Super Grows or six Caffeine should net you 1 SD each. You can keep using your Super Foods until May 25th, but after that, these items will be disabled. They've already been removed from the game store and gifts page.