Since early this year I posted an article online, including referral links to major group buying websites, here is some feedback about referral rewards:
spreets is the top with referral reward, about $500 now, received an email notification for every successful referral.
deals: $26.8
cudo:$10
livingsocial:$5
groupon: 0
The links are in the same post, same readers, similar click through rate (about 10 every day). This would give you some idea about group buying websites' decency. It won't be hard to guess which website I would recommend more.
can you link to article.
what's was it about?