I use a WordPress SEO Plugin which allows search engines to index individual comments like this one: Hiring Skilled Search Engine Marketing Staff vs Unskilled.
The comment webpage looks a lot like a WordPress Post, but it’s a WordPress Comment which can be indexed and ranked by Google in it’s own right, so I want them crawled/indexed so have added them to the XML sitemap (at the bottom of the sitemap, see screenshot above).
I had to modify a WordPress XML Sitemap Generator Plugin to achieve the above as very few webmasters take advantage of their user comments like I do.
Continue Reading SEO Myth : XML Sitemaps Boost Google Rankings