You can do signature campaigns its working great, plus its also not risky to do if you compare with other methods that people have.
I even think the best method because its profitable and you only have to post for it.
You are right. Getting a whole bitcoin with signature compaign is possible and we can do it without risk. But it takes some time. Almost 6 or 7 months I think.. Because almost every signature compaing paying 0.1 to 0.15 only per month..