PwC collaborated with LinkedIn to develop a game called "Guess the Relationship" that tested how well users knew their LinkedIn connections, showing that quality of relationships is more important than quantity. PwC provides assurance, tax, and advisory services to national and international clients from 12 offices in the Netherlands. They worked with LinkedIn to create the relationship game using LinkedIn's API, which over 14,500 people played, driving awareness of PwC's focus on understanding customers. The successful campaign has interested other PwC offices in adapting it for their markets.