Danielle Guzman & Gillian Whitney chat about: Top Tips for Commenting on LinkedIn. Danielle is passionate about sparking conversations in the comments. Many of us fondly refer to her as the LinkedIn Queen of Comments. Based in New York, Danielle is the Global Head of Social Media at Mercer, a global consultancy organization. She is responsible for overall social media vision and strategy for the organization across all social networks. Danielle enjoys cultivating relationships, meeting new people, and engaging with others on LinkedIn.