It's not actually earning a living with bitcoin because my earnings from bitcoin are not sufficient to meet my daily needs but it is really a big help on my budget. Bitcoin is really helpful to lots of people.
Only the ones with great skills and knowledge or great capitals in trading or with some popular websites or gambling websites can earn a living with bitcoin but not me and you who just earn bitcoin from signature campaigns or small trades.
Signature campaign is a good source to earn some bitcoins on weekly basis but you cannot expect that it will enough for your living as payouts are too low that can only take care of your basic stuffs.