I'm from Ukraine and last 2 years I've been only registered and got experience on Russian-speaking SEO forums and also have been working with clients from Ukraine, Russia, etc. And there become very popular past year I think and have a huge demand for Crowd Marketing services, that means in Russian-speaking SEO world - providing linkbuilding by posting on good traffic forums, answering on QA websites and blog commenting. That's All guys, nothing more!!!
And as a result, on Russian-speaking SEO forums appears lots of new suppliers day by day, that provide such kind of service. And also want to say, that prices for that services are higher than in Europe or US and that doesn't afraid clients...they pay and ready to order more and more. For example, post on Russian forum with a clickable link can cost more than 6$!!!
So, the main question: is it normal at all? Why there aren't tones of supplies here for such kind of services? It is not interesting for service providers here, or they don't know how to do it well? Or such kind of links are not valuable for English SEO market? I mean, that most parts of links from good traffic forums, QA websites like Quora are no-follow, no-index, even redirect, instead of all of that, such links give the website the main - traffic!! English clients don't like it at all. I can confirm that I heard the same from Upwork clients for example, but it also depends on the client and few of them understand the importance of such kind of links and ready to pay. But it's so little % of all.
That's it. I hope I explain, what I'm trying to understand. Sorry for a lot of text. Will be very grateful to someone who can help me understand all of this.