There a lot of possibilites to do in order to promote SFI. We can use many pre-made cards, banners, etc but still we can do some of our own.
Also, there are so many products on TC that can be the object of promotion.
Verbal promotion shouldn't be forgotten, some people are better in one-on-one promotion, others are better in online marketing. However, all of these methods can be lucrative especially when combined.