LinkedIn, the business-focused social network owned by Microsoft (MSFT.O), on Wednesday said it now has more than 1 billion members and is adding more artificial intelligence features for paying users. Crossing the billion-users mark puts LinkedIn - where members maintain a resume-like profile of their education, work experience and professional skills - in the top-tier of social media networks that include rivals such as Meta Platforms (META.O). About 80% of recent members are signing up from outside of the United States, the company has said.