Good post Christy! I would like to share some more details about it.
Co-citation is a pretty big deal in the SEO world right now. It works across websites and follows links as well, allowing search engines to piece together a comprehensive map of different topics which are relevant to a piece of content. If you write an article about one thing with a tenuous link to the topic that you are actually targeting, Google will be able to pick up on the true topic and might de-value any links or any parts of the article that are not relevant.

The great thing about co-citation is that it allows you to target many long-tail phrases without having to actually fit those phrases into your content. This means that you can avoid using keyword phrases where they don’t really fit.
Co-citation and co-occurrence seem to be the next big thing in an attempt to avoid manipulation of SERPs, or as many will suggest, it is just another attempt to counter over-optimization, which was the very basis of Google Penguin’s introduction.
check out
http://blog.textbroker.com/how-does-co- ... g-for-seo/and
http://www.searchenginejournal.com/co-c ... seo/60724/
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