Panda 4.1 was released late last month, and according to Google, the search algorithm update uses more precise signals to identify low-quality sites, thereby ranking them lower. Some search professionals have surmised that thanks to Panda 4.1, websites that had been hit by Panda in the past but have made changes to improve their quality have are now starting to regain rankings. Google also says that this update will send more traffic to small- and medium-sized websites.