I'm just looking into this but you guys might be interested. Earlier this month, Baidu sent a site of mine 600 visitors over a few days. The site is offered in Chinese. I never considered Baidu SEO before but, after looking into it, it looks VERY tempting. They own like 80% of the Chinese market and the search engine is seriously from 2004. It still uses meta-tags and meta-descriptions to rank sites. From what I've read, spam links work on Baidu very, very well (it was a spam link building campaign that got me the initial 600 visitors). Baidu is very odd in that it prefers .cn sites, sites hosted in mainland China, and sites that have ICP license (see https://www.wikiwand.com/en/ICP_license ). It even has a Censorship Penalty, where pages containing content against the Community Party's guidelines are penalized. I think that, after the site has been set up, it'll be like 2004 all over again and one could do something as retarded as build 1,000 forum links (from Chinese forums) to a domain every day and rank well. I'm also putting Naver, Yandex, 360, and Sogou on my to-research list too.