It means your referrals have to buy their junk in order for you to get the referral fee. This one looks legit. They don't send out checks until you've referred three people, but other than that it looks like a very good referral deal. There is a short quiz which I'm sure all of you can pass. Ben This is the best price I've seen so far.
Shipping seems to be free.
Their latest version is 6.2, so this is a giveaway to entice you to buy their latest. This looks just as good as any, although it entails signing up for their newsletter. Ben This is for first time electronics customers at Amazon.