To prevent stealing your content my suggestions are:
1. Right after you posted your content in your site - notify Google about it. Log in to your Web Master tool go to Health >> Fetch as Google and submit your URL with your article in it. Click "Fetch"
2. Share your post on your Google profile and Google +
3. Share it on Facebook (your personal page, fan page, etc.)
4. Share it on Twitter
This way you will get the page crawled as soon as possible and Google will know you are the origianal creator and grand master of this content! :-) Cheers,