Signature camapign,trading,gambling and investing thats the only ways i know on how to earn bitcoin.
And i already tried them except for trading.
well, these are not new ways. everyone know about these ways already and gambling and investing are not good ways to earn bitcoin. in gambling loosing chance would be more high then wining. and about investment I would want to say there is not any good investment source to invest our money with no worries.
@Op, your site's only one service I like and it is buying selling goods and service. I think this way we can earn some money though.