If your blog is original and unique then nobody can steal content or it identity from you. You might have heard about Digital Millennium Copyright Act. The Digital Millennium Copyright Act (DMCA) is a United States copyright law that implements two 1996 treaties of the World Intellectual Property Organization (WIPO). It criminalizes production and dissemination of technology, devices, or services intended to circumvent measures (commonly known as Digital Rights Management or DRM) that control access to copyrighted works. It also criminalizes the act of circumventing an access control, whether or not there is actual infringement of copyright itself. In addition, the DMCA heightens the penalties for copyright infringement on the Internet. Passed on October 12, 1998 by a unanimous vote in the U.S. Senate and signed into law by President Bill Clinton on October 28, 1998, the DMCA amended Title 17 of the United States Code to extend the reach of copyright, while limiting the liability of the providers of on-line services for copyright infringement by their users.
There are pretty much easy automated methods to copy everything from any blog as it gets updated from time to time. In order to do so you just need RSS Feed URL of the target blog. Ever heard of Blog Aggregator or Feed Reader? They does the same thing. If your feed gets in the wrong hands, you are in a big trouble. Whatever you will post, it will get published over there also without your acknowledgment or awareness. There is an easy solution to that.
Days are long gone when people used to copy past content from other websites. Not now when you can search copies of your page over internet and Google Policies about website content. No more content theft, at least for websites having AdSense displayed. If you see any website copying your content, here is what you can do: