1. Svbtle is not yet popular. Six members != "popular".
2. Brand? What brand? It's a blogging platform. People don't want it because of a brand. They want it because it's a good idea (simplistic blogging).
3. Coke has a trademarked label. This is merely a website. What is dustin going to trademark/copyright? The ratio of whitespace to small, grey lines?
You can't go around putting the Coke label on different fizzy beverages.
Svbtle is obviously popular for its brand. You are stealing its brand and using it for unintended purposes. The only value in what you've created is that it looks like Dustin's work.
Ripping that off wholesale diminishes the value of something Dustin work(ed/s) very hard to create and curate. Thousands of decisions went into that design. The design is a mark of quality.
Show some respect.