The more than double market share is impressive as this time last year Facebook had just 1% of the news traffic, so the 350% increase further re-affirms their strength to challenge Google as the #1 website in the world. Even with Google's RSS reader it still only accounts for an extra 0.1% of visitors.
It is likely that Facebook will continue to roll out its News services as more organisations such as The Wall Street Journal join Facebook. It is likely Facebook will continue to be a disruptive force for traditional media as they improve their Fanpage platform and allow customisation to suit different business types.
Facebook can eventually supply very detailed visitor and reader demographics which is not possible with traditional search engines and even news websites.
