lupos wrote:We have actually been considering adding referrals as part of the achievement system. I.E. someone you referred reaches level 10 you get a prize. No promises but it's certainly somewhere on the drawing board. We are also aware of many ways to help keep it legitimate but they all have potential drawbacks and it's tricky balancing between prevention of exploitation and upsetting honest users. Like DRM, if it only hurts the good users, it's no good.
And then there's the whole "I refereed my brother, and we use the same computer" issues, or the "I have 230 brothers! I sware! Now where's my reward?"