Get Social: Use the Social Networking Sites to Make Contacts
The social networking sites like Twitter and Facebook are amazing tools for writers. However do realize that these sites are only a tool. You need to market yourself as a writer, and get your name known, before you can use these tools efficiently.
If you're a beginning writer, the above article will help you to get hired for writing jobs.
Here's an additional tip for finding writing jobs on Twitter. Do a Twitter search using hash tags such as #writing, #writing job, and #freelance.