Introduction. About the Idea
Let me tell you how you can earn "a lot of money" on file-sharing services (个_个). The gist of it is that I upload a file from my server to the file-sharing service server via API. I embed the resulting link on my site. After that, a user comes, clicks on the link, is redirected to another page, watches an ad, and eventually gets his file. And my site gets the reward.
What you need to do
Now, let's look at the stats of my site. And we'll start with how many files are downloaded from the pages. If we go to Yandex Metrica and look at the statistics on downloaded files, we'll see the following:

540 archives and files were downloaded in 2 months. Basically, all the downloaded files were from the ImageThief tool. Okay, let's say. To make this idea a reality, the following things will need to be implemented:
- Find a file-sharing provider
- Make sure that this provider has a special API
- Configure all tools to work with the file sharing API
- Check the withdrawal of funds
According to the first point, everything is quite simple, there are plenty of such providers. I think that the best and most reliable will be the one that already has a lot of traffic. That is, you shouldn't take newbies.
According to the second point, it's more difficult. I don't need a very complex or tricky API. In fact, I only need two functions. The first is uploading a file to the server. The second is getting a referral link from the site. That's all. Let's take uploady.io as an example. It has solid traffic and an API. And also, as a bonus, a transparent reward system for downloaded files.
In the third point, I have to rework my tools so that the files are uploaded not to my server, but to the servers of the provider I chose. Okay, I only need to modify one tool: ImageThief. As easy as pie, as they say.
In the fourth point, you just need to check how the money is withdrawn. And whether it is withdrawn at all. If not, change the provider and do everything again.
Potential income
I'm done with the technical part. Let's calculate how much ImageThief can potentially bring me. On average, 250 image archives are downloaded from it per month. Let's assume that each archive will weigh about 1 MB. The official website of the chosen provider has the following prices:

It is essential to understand where your audience comes from. Let's go back to the metrics and filter everyone by country:

A full report can be found here.
The distribution by tiers is approximately as follows:
- Tier 1 - 38 downloads ((38 × 4)/1000 = $0.152)
- Tier 2 - 4 downloads ((4 × 2)/1000 = $0.008)
- Tier 3 - 102 downloads ((102 × 1)/1000 = $0.102)
- Tier 4 -96 downloads ((96 × 0.5)/1000 = $0.048)
If I understood everything correctly, and I am good at math, then the result will be $0.308 per month. Although, damn, I forgot to subtract the percentage from the translations. Then it will be somewhere around $0.270 per month. Wow, that even looks pathetic. That's not even a single dollar.
Conclusions
Well, what can I say? The numbers speak for themselves. If, for example, I want this to become my main income (well, at least $500/month), then my site statistics should look something like this:
- 412,500 archives of about 1 MB in size are downloaded from the site every month
- The site has 2,079,000 unique monthly visitors
Where do these numbers come from? Multiply the current number of downloads and visits by 1650. Why 1650? Divide the desired income of $500 per month by the current one, $0.308 per month. The funny thing is that even the file-sharing service we want to use to earn money doesn't have such traffic.
I have no illusions about this blog. I know that, most likely, my ceiling is somewhere around 30,000 visitors per month. Although I still have a long way to go to reach it. Well, that’s exactly why I wouldn’t recommend using this method as your main, or any, way of earning money.