Sites such as Facebook and Twitter can be potent sales tools but require a deft touch. The owners of Kynsi Winery, like many others on the Central Coast, know social media has become an important business tool. And while it’s free, finding the time to use it and knowing what approaches will work can be difficult. “We don’t have a lot of staff,” owner Gwen Othman admitted. “We’re a small family winery. We have a blog, but it’s tough to keep up on.” Kynsi has been experimenting with social media for about a year. Othman put her daughter, Kala Othman Fink, on the task because she’s more familiar with the technology.