Honestly! Is the "Signature Campaign" does work for marketing?
It is the cheapest way to market the site since if you go on other platform they will ask a huge amount for placing your ads there and also advertiser can assure that he will get a real crypto users since the number of users here are millions worldwide, so its really effective to run a campaign but also they owner must have a back up promotion to make things visible in the market.
They shouldnt just limit out on having only signature campaigns and if you are running a business then you should always consider on adding more mediums for sites exposure. We cant really that kind of assurance of success even if we do market our site on this place because if people find out that your site or service isnt interesting then it would still fail.This had been always part of the risk when it comes to business
neither it would work or not depending on the site.Lots of factors needed for you to succeed not only just focusing on market but also whats the most important is on the site you are marketing into
on whats its all about and should be interesting.