A friend of mine earns almost a grand or so dollars on bitcoin. Over the time he has invested in bitcoin he's made a lot of contacts... And he just sits for an hour or two at most per day and earns the above mentioned sum.
Yeah, it require some tricks to earn a large number of bitcoins on Internet from available opportunities, of which I think a lot of people not aware, or they only stick to a specific way of earning and do not proceed with it.