I have been is SFI since 2012 and I have received payment every single month.
Being in a company that has been around a long time and is still earning is important to me.
I am totally committed to SFI for many reasons, but one is integrity. Once my monthly check was absconded by someone who hacked my account and put their Paypal in my payout field. And it was not a small amount.
I worked with SFI and Paypal to remedy the situation. Paypal was not the least bit helpful. But SFI was and they got my entire sum back and in my account before the month was out. I was very pleased. this occurred in early 2014 and I have been active and prosperous all these years.
One person mentioned that several of their affiliates became inactive. This probably happened because they were disillusioned by a change that came along. But one strength of SFI is they change, they flex to be more and more relevant to the market. But change, even positive change can be tough.
Many here have said it is complicated. I would not call it complicated, I would call it Diverse. There are several ways to earn an income and you can earn without any cost.
For example they have a Reward Token called Rewardical (RT). It is about, at this time, 600 RT to 1 USD. There is no minimum to qualify to receive RTs, there is no minimum to cash out RTs. You can earn RTs in several ways and you match RTs 1 to 10 (10%) to the earnings of anyone your recruit. This results for me to 35 to as high as 70 USD a month in RT alone.
RTs will not make you rich, but it is a very good "free source" of income. So even someone with very little to invest can earn. Now if you can invest your earnings will be much higher, mine are, but it is not required by the program that you invest.
I am happy to share any of my experiences with anyone interested or already engaged in SFI. I believe weather you are my affiliate or not the more prosperous we each are the more prosperous we all are.