Fencer: First of all, thanksfor putting the offer up!

Question is, as you are stating that the vouchers cannot be used for the buyer himself, you obviously don't want people to use that as a simple 'buy 1 year, get 2.5 years', but for *giving* to others - very nice also in the sense of Christmas. But now John could buy a year and give his vouchers to Jane, and Jane buys a year and gives her vouchers to John, basically circumventing the limit. Do you actively discourage that, meaning you will not assign the vouchers then? Or is that accepted?
I thought about not posting that to not give people ideas, but, realistically, many will come up with this. Easily.