Some of the most valuable people in job searching have been those I've known only casually. They aren't people I networked with in order to find new jobs; rather, they're resources I used to determine whether or not particular jobs I already had my eye on would be a good fit for my goals. While networking to find new jobs is a priceless tool, sometimes it's not the job you need help with, but getting more information in order to make an educated decision.
When you're looking for a new job, ask your friends and relatives if they know anyone in your industry of interest. After you've been introduced in person or through email, ask the industry insider any question that isn't too personal to them. For example, ask them to describe the organizational aspects of companies in the industry, what it takes to succeed, what you can expect in the positions you've been offered or have applied for, if there's seasonal business, etc.