Do you know that Signature Campaign is an invention of bitcointalk.org?
It is not an invention of Bitcointalk.
The signature space can be disabled by theymos anytime. The signature campaign industry in Bitcointalk can be stopped anytime by theymos.
I didn't know before now. I had thought that signature campaign is something that has been in practice even before creating the bitcointalk forum. But I was surprised to discover otherwise. I searched the internet for ways to earn bitcoin. Many blogs including binance news acknowledged that signature campaign is a means to earn bitcoin and it was started or it is exclusive for bitcointalk forum. Even
99bitcoins said a similar thing.
You are discussing two different things.
Signature campaigns to earn bitcoin.
Signature campaigns to earn income, not in bitcoin.
If it is to earn bitcoin, I am so sure Bitcointalk is a first place to have it because Bitcointalk is a Bitcoin forum, created by the Bitcoin creator, founder. You can not find other places to earn it, before Bitcointalk.
If it is to earn income, not in bitcoin, you can find other places, other forums.
BBCode was invented in 1998, long before Bitcoin and Bitcointalk.
A first offer to pay forum members in bitcoin is in March 2013.
[WTB] Buying your signature space, paying 0.1 BTC require: 50+ posts per monthHistory of signature campaigns.
Evolutionof signature ad campaigns (beginning days to the present)