Hey sir. the signature thing that they are talking about are those referrals in the bottom of their comments?
Welcome aboard mate... feel free to look around and read threads.. You will learn a lot from reading..
Yes, signature campaigns are those banners below our comment they are paid every time we post here..you will join signature campaign later on, so you have to prepare and read alot about bitcoin...
Again, welcome and goodluck.. good vibes..