there is no decent way to earn money with bitcoins only right now though i hope it will be possible in the future
Signature campaign is really good for earn stable money with bitcoin every week. But, you also need a work to earn that. There are many ways to earn money with bitcoin, but signcamp is the best for me.
Don't make signature campaign as your primary income , but if you can maintain your posts you can get good amount from sig camp .
The funds you got from signature campaign , you can used for trading an altcoin.
Definitely true, you cannot earn a decent amount in signature campaign, this just for a simple way to support a certain business and you are having fun in doing it, the amount you receive is just good to treat yourself sometimes but not really enough to support your daily needs in life.