Social networks allow individuals to connect and share information online. Popular social networks like Facebook, LinkedIn, and Twitter each have hundreds of millions of monthly active users. Businesses are increasingly using social networks for marketing purposes like brand awareness, customer research, and lead generation. One case study describes how a company used LinkedIn groups to engage with target industries and generate new leads. Nonprofit organizations can also benefit from social networks by building communities around their causes and fundraising. As new platforms emerge, social networking continues to grow globally.