Set up a standing order and your affiliates will see that you've done this by the badge you receive.
Purchase a S-Builder Co-op and your affiliates will see that you've done this by the badge you receive.
Become an IAHBE member and your affiliates will see that you've done this by the badge you receive.
Bid on auctions and when you win your affiliates will see that you've done this by the badge you receive.
Notice a trend? SFI has set up a system that allows you to lead by example, so your affiliates will see your success and how you do it.
And while the badges speak loudly for you, be sure to include how these purchases have helped your business in your weekly newsletter to your affiliates!