According to a recent piece in Entrepreneur, businesses are hiring Wikipedians to write articles for them:

For all its flaws as a crowdsourced encyclopedia, there is a widespread belief that Wikipedia conveys credibility: If you or your business is on there, you seem legit. This has fueled a booming, underground world of Wikipedia editors for hire — people who, often secretly, use their expertise and good standing in the Wikipedia community to build pages for attention-starved startups and other paying clients. Services can range from a few hundred to a few thousand dollars. Multiple such editors interviewed for this story say they’re inundated with business.

As a reminder, the Wikimedia foundation strongly discourages this practice as a conflict of interest.