Additionally, managers often prefer to find their employees via networking. Mitch Bishop, Director of Marketing for Wind River Systems in Alameda, is a big fan of networking as a source of candidates. I've recently hired two key people, both through networking. Direct, relevant experience with a colleague is important. And people who are referred tend to work out better also.
Many people hesitate to network because they feel awkward asking for help.
The key is that you're asking for advice, not for a job. This approach can make your calls less intimidating. Depending on the situation, ask if they know of any companies that are hiring or of any people familiar with the industry who might know or could give you advice. They are a means of penetrating firms where you are unable to network because you have no personal introduction. For example, if you have strong experience in a particular industry or with a certain software package, you would research which companies are in that industry or use that software package.