What is exactly buying and renting referrals on ptc sites?

Ryo Ren: What is exactly buying and renting referrals on ptc sites?
What is exactly buying and renting referrals on ptc sites?
What does it mean? What is difference between buying and renting referrals and interest?

Answers and Views:

Answer by yahoo
Buying referrals means you pay an amount to keep him under your downline forever and you cannot change them when they go inactive
whereas renting referrals means you keep them under your downline for specific period like 1 month and if he goes inactive you can recycle him and get a new one

you can only rent and buy referrals those who join directly means they have no upline