I didn't miss it - I actually addressed it in another comment. While stealing your website code would be unpleasant, it doesn't really matter that much. First, backend website code is not protected by copyright because it's not published - only the design is. Second, do you really think Facebook became Facebook because they found right magic color and right column widths to be successful, and if only you could use the same design you would be billionaire? This is obviously nonsense - Facebook success is composed of many factors, design being very very minor part.

As for DDG, I used it for a month to test, and unfortunately had to go back to Google - for my loads, its quality proved to be inadequate, Google found what I needed in more cases than they did. It may be because usually I search for very easy and obvious stuff. I would like to say my coworkers "why, you still use Google? Man, it's so 2000s... It's 2012 now, use something that's not ancient!" Unfortunately, it's not the time yet that I could do that.

> First, backend website code is not protected by copyright because it's not published

Unpublished works are protected by copyright. http://copyright.cornell.edu/resources/publicdomain.cfm

But wouldn't you need to distribute for copyright protection to kick in? Copyright is exclusive right to distribute. If you just stole the code and keep it, you can be liable to various crimes, but I don't see how copyright infringement can be one of them.