You haven't earned anything. Nadda.

In essence: You met this stranger on the street. Kinda cool looking dude i.e. nice website. You hand over $2400 USD (4 BTC) in a bag i.e. bitcoin transaction. Just like that. Every so often, he comes to your house i.e. wallet address and drops tiny amounts of coins on your doorstep (no analogy needed.)

You go around shouting in your neighborhood i.e. bitcoin forum about how you are "earning money". If anyone is "earning money", it is that total stranger you just handed $2400 to, no? You even told this complete stranger not to worry but promise me dearly you will return the bag of $2400 in ONE HUNDRED AND TWENTY DAYS from now.

Maybe he will, maybe he won't. How can you enforce this performance? And those coins this total stranger drops at your doorstep every now and then, what if he decides to stop doing it? What can you do about it?

If all this seems right as rain to you, then, okay, I'll dress up nice and pretty (even use armani cologne) and ask you to meet me at a bus stop in your city, and you hand me $2400 in a paper bag. I'll then take the next bus that happens by. But before I do, I'll take out a few coins from that paper bag right then and there and hand it over to you so you can buy yourself a yummy ice cream cone --cause I'm a very nice guy i.e. "support" request answered immediately.

Dude, if you wouldn't do this in real life, why oh why would you think so radically differently otherwise? ...and on the INTERNET of all places???