if u looking where get lots Sweep Coins for free, u must check Golden Dragon Play! they so good for get Sweep Coins without pay money. When u first sign up, they give you some Sweep Coins to start, no need money at all. And every day u login, they give more coins, it add up quick!
Also, they send emails sometimes with bonus codes for free SC, just put code on website and boom! more coins for you. They got this referral thing too, you tell friends to join and when they sign up and play, you get more bonus SC. More friends mean more coins, very simple, yes?
Plus, they do big giveaways on special days like Christmas or New Year, they give lots extra coins to all players just like that. This really good because you play, have fun, and win more without spend your own money!