Wiki is similar to a free encyclopedia where you can create and edit pages on any given topic. Most Wiki sites allow communities to write documents collaboratively. Having backlink from Wiki means your site get reference or credit for its content.
We scrape and spin article, then publish to Wiki sites. You will get high authority Wiki backlinks which include some .edu and .gov domains. Most of Wiki links are nofollow, however, they are so valuable and are very well respected by Google. This is one of the most powerful strategies to dominate SERPs.
Let search engines know that your site is a source of Wiki content!