If anyone out there is feeling curious to help out a fellow SEO, I`ve got a question or two in relation to this article from Moz: https://moz.com/blog/seo-link-directory-best-practices
The author talks about paying for inclusion in certain higher-end directories, saying it`s the "bread and butter" of more established businesses. Is that to mean these are valuable, worth-paying-for links?
He later talks about researching candidate directories before submitting anything; he warns to check the cache of the page to make sure it is still being indexed. Does that imply it may have stopped being indexed because of poor SEO or inactivity and that we need to verify the viability of a directory before submitting a link to it?