While each organization has its own criteria for promotion (I'm speaking in relation to Taekwondo) I am interested to obtain your individual opinion concerning promotions. Specifically, I am referencing Dan ranks. For instance, some organizations allow you to promote up to half your own rank (i.e. A 4th can promote to 2nd), while other systems accept a promotion as legitimate so long as the senior is at least one rank higher than the junior (i.e. A 6th Dan promoting a student to 5th Dan). Additionally, you have the potential ability for a 9th Dan to promote others to 9th Dan. Yet another may require a panel promotion, and in some instances panels of lessor ranks may promote their leader (i.e. Grandmaster "X" was promoted by the senior members of organization "X". What are your beliefs and/or standards concerning legitimacy of promotion and promotional authority?