What Is an SEO Writer?
An SEO writer is, quite simply, a writer who uses keywords for on-site (and, at times, off-site) search engine optimization.
As an example, writing for the purposes of SEO may involve keyword research, such as finding frequently searched long-tail keyword chains, and then writing a handful of articles around those keywords.
This may also include link building, in which the writer would submit articles to various content directories or possibly other websites in order to get backlinks with targeted anchor text (which is called article marketing).