Great game but a few tweaks can be made.
Ideas:
There should be more benefits to having neighbors. Gifting is currently the only real bonus to having neighbors.
The ability to sell privately to a neighbor
The ability to chat privately with a neighbor
An indicator when you have a new post on your wall
An arrow or the ability to swipe (like the newspaper) through your neighbors stores instead of clicking each one. It's hard to tell which ones you already clicked on since they change order if something sold in a shop.
The ability to search by a user's farm name
The ability to remove old buildings no longer in use (ex. buildings used for events)
Refresh rate needs to be quicker or the ability to refresh the game on demand. Users currently have to force close for a refresh, especially when trying to view newly placed goods for sale in neighbors stores.
The slots in the shops would be easier to navigate. Maybe if they were in rows of 4 and scrolled up/down vs left/right
That's all I can think of right now. But I will be back if something else comes up