Over the past couple of months, Google has made it clear it's taking local search seriously. In essence, they have reconfigured the search result page and algorithm so organic and local listings become integrated. Studies suggest websites that implemented best practice SEO tactics weren't largely affected by this change, as local optimization was likely already a part of the overall optimization strategy. In fact, it's been shown that sites that already had strong organic and local optimization saw their overall positions increase. Conversely, sites without a local optimization campaign that implemented grey and black-hat techniques (in other words, simply gaming the Google algorithm based on the most recent exploits) have or will soon experience an overall decrease in visibility and ultimately traffic.