For years, Sharon Winkler says, she was a fan of social media. "I was a techno-optimist," Winkler says. "I thought it was wonderful." Sharon Winkler of Atlanta poses with a photo of her son, Alex Peiser, who died by suicide after receiving bullying messages online. (Beth Galvin FOX 5) But the loss of Winkler's 17-year-old son Alex Peiser to suicide changed everything. "Alex was a really great kid," Winkler says.