10 Arena games a week

Hi Guys, I've been lurking around the forum and saw that these are the ways for faster getting PVP geared.

-farm wintergrasp
-1 bg win a day
-10 arena games each week
- vote points

What does "10 Arena games each week" means? and does it need to be rated or not? Do you get some reward when you play 10 arena games a week? is it a quest?

Thank you!

Rated arena flushes every wednesday.
To be eligible for points, you need to have atleast 30% played in a team that has atleast 10 games played.

Thank you. How about Raid and daily flushes. When does it happen?