Internet Marketing and E-Commerce Consulting.
I sell stuff to people online through Facebook Ads. I have various channels of "stuff" to sell them from gimmicky t-shirts to high end branded clothing. Also sell some sterling silver necklaces that bring a pretty commission. I have spent a lot of money on Facebook's advertising portal and the amount of information they have on you is SCARY. If you have a pit bull, like the Chicago Bears, are between 30-50, live in Orlando, FL, and listen to Taylor Swift.....I can target you with w/e product I want.
At the most basic level I buy traffic that I send to a landing page/store (shopify) where I sell various products. 50% of what I do is on platform based companies (teespring, etc.) where if I sell a shirt for $24.99, I make a commission of $13-14 but, I don't have to hold inventory, ship anything out, receive payments from customers, handle customer service, etc. I just upload the design/product and handle the marketing. That allows us to do it with various products on multiple websites. Then we have a couple stores/brands where we have fulfillment & drop shipping in place to allow for a much higher profit margin. This is where the real good money is at.
We got into this industry during the gold rush period and have set ourselves up for long term success. I got into it when I was 23 and started making good money. Enough that my brother walked away from a regional director level position with an oil company to become my partner. We have several ventures now, the most recent being e-commerce consulting. We have an established "presence" in our circle of folks and we've started to show others how to do what we do. Definitely an interesting line of work.
Before you make a "lol you sell gimmicky shirts online" comment, google "Teespring/Shopify success stories". You will see the amount of money in this industry. The good thing is, anybody can jump into it and start.