Connecting with a small group of people to whom you will be accountable every week is often a valuable push when job-searching. Churches often host such programs, which differ from large networking events. Search online for a job club near you.
For this to work, you must do it daily. Use LinkedIn to research companies and connect with people who work or worked where you want to work -- or know someone who does. Twitter is a platform that enables you to talk directly with people in recruiting or other divisions at the employers you're targeted. Facebook has feature from Simply Hired that allows you to see the job openings at the companies of your friends, which makes it easy to ask for a referral.
Showing up in person is essential, as long as it's at the right events. Call ahead to ask who'll be attending and research the speakers or key guests before showing up. Bring business cards, but no resumes unless it's a job-search-related function. More importantly than passing out your card, which leaves you in a reactive position, ask for the cards of anyone you're really interested in reconnecting with.
If you can't find someone to hire you, consider hiring yourself. SCORE.org offers extensive free online resources and free events to help aspiring business owners get started.