Good to know. Thanks for the clarification Junior.

我们刚开跑会员联属计划可以增加你自己的点数，欢迎你请你介绍朋友进来，好好把握机会哦。。。 我们暂时开放于每个人都可以进来注册新户口，不久将会关闭，只限邀请。。。

Which means you can seed more older torrents than 1 (no system limit) and download at the same time.

Yes, it is a flat 0.5 points per hour seeding. Other calculation schemes were proposed and discussed frequently. They are considered, but no change is scheduled right now (though I know the owner likes to improve it).