Curling...looks interesting, but I don't get it.

Now that the Winter Olympics are under way I've kinda become interested in curling. Sometimes I even watch it on the Canadain channel CBC.
I have two qustions about curling.
1. How is scoring kept?
2. What's with all the sweeping and how does it affect the travel of the "stone"?
It amazes me how the team can finesse a "stone" into place(!) although I don't know why.
I have two qustions about curling.
1. How is scoring kept?
2. What's with all the sweeping and how does it affect the travel of the "stone"?
It amazes me how the team can finesse a "stone" into place(!) although I don't know why.