when there is a "half price" - then you can buy land with them. Also price for land grows with how many tiles you bought. First 20 can be bought with money. Rest can only be bought with greenies, so don't waste them. @Dotsaki
I would like to find friends that will help me with upgrade items. They are really tough to come by. I play daily and will send F20 or whatever you let me know what you need. (If i have it to gift.) If you are interested, please PM me and I will send you my ID.