[T]he online world outside of Facebook is already a very open and connected place, thank you very much. Densely interlinked Web pages, blogs, news articles and Tweets are all visible to anyone and everyone. Instead of contributing to this interconnected, open Web world, the growing popularity of Facebook is draining it of attention, energy and posts that are in public view.
Every link found on the open Web, inviting a user to click and go somewhere else, is in essence a recommendation from the person who authored the page, posted it or broadcast it in a Tweet. It says, “I’ve taken the trouble to insert this link because I believe it will be worth your while to take a look.”