I had a traditional, i.e. one that wanted salary history and other non-relevant information, recruiter tell me during a discussion that person x at linkedin say

I had a traditional, i.e. one that wanted salary history and other non-relevant information, recruiter tell me during a discussion that person x at linkedin says you should provide this information. This is when I realized that linkedin in not about professional relationship but about recruiting folks and that recruiters will find it most useful. As I can find a job without a recruiter, linkedin's value to me is close to zero.