Google Places: Maximize your free listing on Google Search and Google Maps with photos, hours, coupons and more. Monitor search terms, opinions, click rates and geographic information of visitors to your site.
Yahoo Local: Capture more attention on this search engine with free listing (products/services, hours) or an enhanced listing ($9.95/month) that allows logo brand, photos and detailed information.
Yelp: Over 31 million people use this opinion-based social media to share reviews of restaurants, hotels, attractions, professional services and more. Place your free listing here to be part of the conversation and to monitor your brand.
One of the fastest-growing social networks, Foursquare allows friends to "check-in" and share current locations and earn points. Add your location to the Foursquare network to make "checking in" easier, and maximize your message with tips or special offers.
Google Places
Yahoo Local
Yelp
Foursquare
For more information about these four options click below: