Many small businesses spend big money on getting themselves noticed on the web with very little results. Often with a little effort of someone who has some basic computer skills can improve a company's presence with many of the free tools that are available.
Yext has one of those tools and they will allow you to use it for free, but like everything that is free there is still a price to be paid. If you use Yext's web listing tool to just get a report of where your business is listed it won't cost you anything but a couple of phone calls from their sales team trying to get you to use there service.