“ If you are a corporation and you sell digital or concrete products, there are multiple parts to your corporation that are cost centers. By definition, these cost centers are parts of the business that generate no revenue directly. However, if you did not have these functions, your business would fail. Social media may have a marketing element to it, but parts of it are like “pre sales” or the early parts of the sales cycle. That is the time where you are having coffee with a potential customer, just in the hopes that they will consider your product.”
Source: regulargeek.com