The Gainesville Police Department wasn’t sure what to do with Facebook at first. “(In 2010), there was much apprehension from the then executive staff as well as the officers. But since then, it’s turned out to be one of our most valuable tools,” Sgt. Kevin Holbrook said. Law enforcement agencies in Gainesville and Hall County now say social media platforms like Facebook and Twitter help create two-way communication in real time for authorities and the community.