not from what i seen... the only rule you have to respect is this one :
On sites like this one, all members have to share back what they took. You have to
seed (let others download from you) at least same amount of data that you downloaded.
Well, at the beginning of your career, it doesn't have to be exactly same amount, so just look at the requirements yourself:
1. If you have over 20GB downloaded you are required to have a
ratio above 0.300.
2. If you have over 50GB downloaded you are required to have a
ratio above 0.400.
3. If you have over 100GB downloaded you are required to have a
ratio above 0.500.
4. If you have over 150GB downloaded you are required to have a
ratio above 0.600.
5. If you have over 200GB downloaded you are required to have a
ratio above 0.700