Please explain me how [the HELL] a person got ~1487 BTC? :S

I'm sure it wasn't from selling something. I prefer getting paid from online tasks (not gambling!), unfortunately they don't pay much. I'm guessing the best pay to earn is to start a website which offers users to get paid for viewing ads, putting ads on their sites for BTCs, or any game which gives you BTCs (like the ORB and similar sites).

I know where to get a CMS for creating a site like the ORB, maybe after getting some BTCs I'll try running one myself. I wonder how much is it cost to run such a website.