Oh boy! Are you actually proposing real life distribution for intangible magical internet points? I’m sorry but that’s simply not possible. Maybe if Bendrew made a Fluther stamp and stamped some paper they found in the dumpster behind HQ and posted a notice on the blog as to where you could come and get a stamped crappy paper yourself, it would be cost effective. But t-shirts or gift cards, no that’s just impossible to fund. Websites don’t make a lot of money, the fact that the 2 person + contractors operation can live and do what they love is really a good return of investment without a lot of spare change to be giving away :)
Radio stations can do it because they are literally drowning in merch and swag which they advertise by means of giving it away on the air. Fluther, not so much so.