CityVille Cheats and Tips: Collections are useful beyond the cash in

You all likely know that CityVille Collections offer lots of Energy, coins and other rewards when turned in, which is great. However, Collections are far more important than that in this game, as forum contributor mws_1984 says. There are several items in Collections that are needed for Goals to complete them. So, one could just go cold turkey on Collections in fear of sacrificing an important Goal requirement, or they could be smart about it.