Well, I can't calculate my earnings for sure, cause it all depends from my active ness here. I have member rank and get for every comment 0,00013 BTC so my earnings depends only from me. But I'm happy even for that. Now I make enough money to buy like a bread or pack of milk everyday  Grin and it's good for me, cause this few money I spend, it made only from commenting and investing my time and my salary from daily work stay more saved and day by day my savings are rising.