What design did they copy? As far as I can see you are both just using Twitter Bootstrap? The logo - is that the lightning icon? What is the background functio

What design did they copy? As far as I can see you are both just using Twitter Bootstrap? The logo - is that the lightning icon? What is the background functionality? Are you competing in the same market? If you are worried about looking similar to other sites then spend some time on a more distinctive design than Bootstrap.