Yes, especially since traffic on the web is not zero-sum. I can visit both, or neither, and a visit to one doesn't mean I didn't go to the other.

Although I think that the data supports the general trend in people looking to social media for information before looking for brand sites, I would throw out there that people also google brands and use blogs and review sites for information, which could account for lower visitor counts.

Doesn't that mean the market's becoming more efficient? I never visit some tech sites, for example, because I know anything worth reading on there will show up here.