How do you convince people how great Steemit is, without risking to sound like a spam email?

I never thought convincing people to join Steemit wouldn't be easy. You're basically asking them to do what they are already doing everyday, but get paid for it. So when I texted my brother yesterday saying 'You should really join this new thing. It's called Steemit and you can actually make thousands by writing stuff.' I was expecting him to be really interested. Instead he replied saying 'I'm busy playing Pokemon Go at the moment'.
I was perplexed and a bit hurt. I mean really? He's always been looking for ways to make money and when I give him this amazing idea he completely ignores it.

But then I thought about it. If someone tells you that you can win a lot by doing a simple thing, you automatically think it's a scam. You get them everyday. 'Click here to win an I-phone', 'Visit this website to win $1000', 'Horny singles near you' (I know, you've never seen this one). None of us have actually though 'Hmm.. maybe I should look into this, see if it's genuine'. Nope, we simply ignore it.
So when I told my brother he could make money by doing something as simple as writing stuff, he immediately ignored me. And I'm not even a dodgy website, I'm his sister.

People have learned to be cautious, especially when it comes to the internet. A concept so new and incredible is bound to make people cynical. 'You mean to tell me that I can make my monthly wage by writing one post? That's Bulls**t'.

To be honest, when I joined I thought the same. I might be able to make a few dollars, but never more than that. And when I logged on a few days later to find more than $1000 in my wallet I was mind-blown.

So how do you convince people to relax and consider looking into Steemit? Every time I went out of my way to make someone understand the amazingness of this concept, I failed.
But this morning my friend Leah and I were waiting for our prenatal lesson, and we started chatting about it. She asked me if I had made anymore money with my last post, then shared her idea of a new article. The lady sat next to me heard us and joined in the conversation, so we casually explained to her what it was we were talking about. Then something amazing happened, she took her iPhone out and made an account, there and then. After the lesson, instead of chatting about diapers and breast milk, we were all talking about Steemit. So I realized that people might be more inclined to join in if they feel they are missing out, rather than being pushed to do it.

When I got home I called my brother and invited him for lunch. While we were eating I randomly asked my partner how much he made with his last post. It was about $200, so not a lot. Then we casually changed the topic. But my brother got curious. 'Is this the Steemit thing you were on about? And without once asking or encouraging, I convinced him to make an account just by talking about my experience. You can say I fooled him into joining, but I did it for him. I wanted him to get paid doing what I know he's really good at, writing.

So do you need to fool people to be able to do them a favor and get them to join Steemit? Or how do you convince them how great it is without risking to sound like a spam email?