Google+ is a social networking platform that competes with Facebook. It allows users to share photos, chat, and post updates to their stream. Key features include Circles to organize contacts into groups, Hangouts for video chats, Sparks to share interests, and Instant Upload and Huddle for mobile sharing and chatting. For businesses, it offers potential for direct access to interested customers and easy remote communication, though rebuilding social networks on the platform and targeted marketing may be challenges.