The short answer is Karma. The better answer is The Rule of Reciprocity. The flower children in San Francisco in the 60s implemented this behavior and it worked wonders for their fund raising efforts. By passing out flowers, people felt compelled to make a donation. How many of us receive unsolicited mailing labels from one charity or another, and feel compelled to send in a donation? By doing something kind for someone that is in a position to potentially help you, you are creating the rule of reciprocity.
By making a point of setting up Google alerts of job openings in a company that you are interested in joining, or perhaps staying alert of a recruiter that works in your field active searches, and offering suggestions of potential candidates, you are staying on their radar screen in an innovative, positive way. While the vast majority of people that contact us want something from us, reaching out with an offer to help sets you apart from everyone else. It also gives you a terrific excuse to contact us, by providing names of potential candidates.
When you do that, it is also smart to just add a small note saying that to please keep you in mind if we do come across any XYZ roles within the ABC space. We are all deluged by so much these days, small reminders like that will help us tie in your name to your area of expertise.
Source - Read More at: www.execunet.com