Twitter: Much ado about ...

According to data compiled by link tracker Tynt, email remains the most powerful social networking tool that people use to send and receive content links on the Internet. That's 70 percent of link-sharing traffic. But what's most impressive is the fact that Facebook came in second with 25 percent of the audience.

參考來源： When It Comes to Social Sharing, Don’t Forget About Email – GigaOM (在「Google 網頁註解」中檢視)