From the Linked In "About Us" page:
When you join, you create a profile that summarizes your professional expertise and accomplishments. You can then form enduring connections by inviting trusted contacts to join LinkedIn and connect to you. Your network consists of your connections, your connections’ connections, and the people they know, linking you to a vast number of qualified professionals and experts. Through your network you can:
- Manage the information that’s publicly available about you as professional
- Find and be introduced to potential clients, service providers, and subject experts who come recommended
- Create and collaborate on projects, gather data, share files and solve problems
- Be found for business opportunities and find potential partners
- Gain new insights from discussions with likeminded professionals in private group settings
- Discover inside connections that can help you land jobs and close deals
- Post and distribute job listings to find the best talent for your company