Mobile marketing is an increasingly effective way for small business owners to tap into a younger customer base. Cell phones continue to perform functions beyond making calls and many can tell where you are and what’s nearby. This technology creates a new way to market your business to customers when they’re literally right around the corner. A recent JiWire survey reported more than 50 percent of mobile users would like to receive location-specific advertising; another 39 percent would like to receive location-based coupons.

Your Better Business Bureau recommends the following mobile tools to market your business to customers on the go. Even if you aren’t ready to launch a mobile marketing campaign, it’s still a good idea to take ownership of your business’ profiles on these sites to make sure the information is accurate and up to date:

Facebook—boasting over 500 million users worldwide—recently launched Facebook Places as a Foursquare competitor. Facebook users can check in and their locations are published on their Facebook pages. And, they can see which friends have also checked in.

Similar to Foursquare, you can create a new place or claim a location that already has a Facebook profile. You’ll be asked to verify you can claim the location before you’ll be able to add photos and business details.

Yelp is a Web site allowing users to post reviews of businesses, services, locations and events. According to Yelp, 33 million people visited the site in June 2010. In addition to the site, Yelp also provides a mobile version with an interactive map and allows users to check in at locations. After unlocking your location, you can offer coupons through Yelp, update your business information and promote events.