Example No. 2,351 that it’s a Google world and we’re all just living in it: The search giant announced late Wednesday a slow rollout of Google Voice, the company’s first attempt at unified communications. But Google Voice could also serve as a clarion call that a different kind of competitor may have arrived for UC providers such as Microsoft and Cisco Systems. “The new application improves the way you use your phone,” wrote product managers Craig Walker, Vincent Paquet and Wesley Chan on the Official Google Blog.