“Content marketing” is a marketing technique of creating and distributing valuable, relevant and consistent content to attract and acquire a clearly defined audience – with the objective of driving profitable customer action. Awesome, note the words “valuable, relevant and consistent content”
With this in mind, you can tell if a piece of content is the sort that could be part of a content marketing campaign, if people seek it out, if people want to consume it, or are they avoiding it.
Unlike other forms of online marketing, content marketing relies on anticipating and meeting an existing customer need for information, as opposed to creating demand for a new need.