The key is money.

I heard that in 2017-2018 was the best years since many people can earn a lot money with minimal effort, they only need to tweet, re-post, translating using google translator, spamming 1-2 liner(s) in this forum etc.

After most bounties turns scam, most people leave the forum, many users shift to signature campaigns and the forum still renting the ads banner.

Theymos decide to stop the ads banner, now starting this year the forum ban mixer promotions which make the traffic going down.

How to make Bitcointalk become popular again? enlarge and expand the incentives.