It is a case study. It doesn't mean it's the same for every website out there. That's in the article. Of course the website is more appealing for Twitter users.

It is a case study. It doesn't mean it's the same for every website out there. That's in the article. Of course the website is more appealing for Twitter users. It says that in the article as well. To answer your question. uberVU gets more traffic from Google than from Twitter.