It is a truth universally acknowledged that if something is on the Internet, it must be true.

I've been waiting for a while to rip off Jane Austen like that, and this seems a good opportunity: a new report on the apparently widespread practice of companies "stuffing the ballot box" with 5-star reviews on Glassdoor.

The Wall Street Journal ran a widespread investigation that showed how companies famous and not-so-famous, including Space X, Slack, LinkedIn, Clorox, and many others, work to rack up 5-star reviews on the employee review site.

For some companies it's as simple as offering every employee who posts a review a bit of company swag, like a coffee cup. For others, apparently, it involves getting eager interns to post wide-eyed depictions of how great their companies are.

Why do it? It''s basically the same reason people run massive campaigns to get 5-star reviews for products on Amazon or restaurants and attractions on Yelp or TripAdvisor: pure business. In this case, we're in one of the toughest hiring markets in decades, and Glassdoor has become a required stop for anyone considering working at any big company.

There's one clear winner in the whole thing: Glassdoor itself. It's visited by 60 million people each month, has a robust business model, and was acquired by a Japanese company last year for $1.2 billion.

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