Here is an idea for you Chip. (its actually something im considering)

NATS, which you use and i soon will be has a built in reward system.
As Paco said, electronics, physical goods ect that need to be shipped is no good really. And stuff like Amazon gift certificates are also a bit worthless. In all honesty if something wants something like that they will buy it.

Here is an idea i have had.

Use the reward system for what could be called "affiliate packs".

For instance,

One of your prizes may be

2% increase on revshare for LIFE
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You can accomodate for refferals to for instance

1% refferal bonus for LIFE
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See basicly, yes your giving prizes, but everyone WINS.
Their price is to earn more.


Id actually like some opinons on this. I wasnt planning on saying anything untill i was planning it properly.