BSIP79: Allow non-LTM Accounts to be Referrer

Currently only LTMs can be referrers. This caused a problem that in order to earn money, you need to invest some money first, IMHO this drives away potential marketers E.G. small bloggers.

This BSIP proposes a protocol change to allow non-LTM accounts to refer new accounts. The referral income that a non-LTM referrer earned will be split to herself, her registrar and her referrer. If she upgrades to LTM, her future referral income will be kept by herself.

Risks:
This change will potentially turn the referral program into a MLM scheme, which could be illegal in some jurisdictions (I am not a lawyer, please correct me if I'm wrong), although every account has the option to upgrade to LTM to stop sharing new referral income to the registrar and referrer.