As a matter of fact, "Chi-town" is the third biggest and most populous cities in the United States - that makes for a lot of local businesses that are just trying to get the word out about their products and services they offer. In this economy, the more visibility the better and that's exactly what http://chicago.onlythebestusa.com/
The website has over 50,000 local businesses listed that visitors, tourists and local citizens alike can review, rate and discover. The Windy City now has a huge directory of local professionals in Chicago that are all looking to provide exactly what you're looking for - whatever that may be.
The last thing anyone wants to do today is rely on the same handful of massive review sites. Often times the best reviews and feedback comes from niche sites like this where people can see the experiences of others to make their purchasing decisions.