Max.org - Coin RunIn YoVille, players can get "coins" by visiting friends. You can visit friends by clicking their avatars at the bottom toolbar.
When you are taken to a friend's room, you will be able to find a gift icon. You can get 30 coins and a random gift per visit.
You may also click the View Guestbook icon at the bottom right corner, and leave a gift or post a message to your friend.
You can not earn coins indefinitely by visiting friends, however. You can get coins and gifts for up to 9 different friends daily.