You probably use Facebook. Even if you don’t I am sure that MOST people you know do.
More and more of those people are finding businesses on Facebook because those businesses create a business page and encourage customers to rate their business, leave reviews and make comments.
Sure this takes a bit of work, but it can easily pay off.
Another great factor is that Facebook reviews are listed in the relevant business listings in Google search results. Your Facebook page can also be listed higher in the search results simply because of Facebook’s overall relevancy weight.