Every Saturday, we compile a few of the most popular stories from the week. Social media updates took center stage over the past few days.

Local search is becoming more and more important while consumers demand more peer reviews to make purchasing decisions. Foursquare launched a new application exclusively for business owners to personalize their location’s profile.  In addition to uploading photos and managing specials, the tool gives owners access to track customer visits and other helpful data. Should Yelp be concerned?

There has been much speculation that Twitter will reach $1 billion in advertising revenues in 2013. This looks promising after the announcement that  Twitter will launch its advertising API some time in Q1. The company has been making moves in preparation–on January 22nd, Twitter added support for marketers to target several specific geographies at once in different markets around the world.

The use of infographics grown exponentially with the rise of social media. Infographics are an effective way to share a lot of information with readers in a way that is easy to comprehend. Nowsourcing created the ultimate infographic, “The Rise of the Infographic: The Rise of a Revolutionary Marketing Tool“.

Finally, are you looking to grow your Twitter reach and cultivate a community? Check out this list of six tools to learn more about your Twitter engagement.