1.contact network is built up consisting of their direct connections, the connections of each of their connections
2.It can then be used to find jobs, people and business opportunities recommended by someone in one’s contact network.
3. Employers can list jobs and search for potential candidates
4. LinkedIn also supports the formation of interest groups
5. Linkedin Users are hate spam submissions.
6. Linkedin is the best best network website.
You should join with any group related to your goal customers. and you sent message to individual members. but linkedin is very professional social media site. For Quick links linkedin not very helpful. It may give only Quality and professional views.