Someone is going to give you an online presence. If they hate you — I mean they had a really bad time — they are going to spread the hate. And hate can spread like wildfire if unchecked. Yes, people are going to say bad things, but that’s a chance to make lemonade! Wouldn’t it be great for you to have an active email list you can mobilize to send good reviews and spread good will when a bad review pops up on Yelp? How awesome will it be for future customers to see a quick response from you to a complaint posted on Facebook?