SFEtsy Referral Promo idea

I was reading the discussions in my SFEtsy group, with regards to coming up with a referral promo to fellow sellers, and I've come up with some thoughts about this.

I think that it is important that we should keep this promo as simple as possible (for the buyer), as we want to encourage them to use it and not to deter them.

For instance, if I sold an item and included this promo card with other SFEtsy member urls (in their package), then that buyer goes to say, Fossa's shop and buys something, she/he would enter "jeynreyn" into the Message to Buyer box, and that would tell Fossa that this buyer was referred by a purchase on my shop, and she would in turn refund any shipping costs to the buyer. Of course, the notation of which name to use in the box would be customized to whomever is sending it out in their packages to buyers.

What I came up with (design wise), is for the card design to have a small pic of what each SFEtsy member has to sell. This way, it won't just be a bunch of urls to each of our shops, but actually show a bit of what type of items we each sell, and that can give the potential referred buyer a quick visual of what type of shop to pull up. I did a 6 x 4 jpg version, but only to make it so that you can see it. I couldn't include everyone on it, but maybe we can find a design can include all, or maybe we can alternate or have alternate cards made?

And this might be better to have as a small card, rather than a sticker in this case, because a sticker would have to fit the majority of our business cards, and a card can be taken with them to show to friends,etc. Also, not sure about the others, but my card happens to be a small 2 x 2 one, so maybe this plan would work for other SFEtsy members too.

Hope this helps!
Let me know what you guys think (posted comments are most welcome!)

Jeyn :o)