Hi! I want to know about referral program. I found lots of sites. They offer Different kinds of referral program. for example Hotfile offer "20% from the money earned from affiliates who you referred to the HotFile". mangoshare offer 0.10 $ for per refferal. co.cc offer 40% sales commission & 0.10$ for free domain registration. Turbobit.net offer 2 level ref. programme (20% and 5%) etc. Some of sites offer .1$-1$ per free signup for referring friends. Now my Questions are... 1. Which sites offer best referral program? 2. Which sites payment is highest for referral program? 3. Which sites referral program is most effective? Note : Please give only free to join sites details. No paid or scam sites...