Why Google Cut Off SEO Keyword Data
Google confirmed a few weeks ago that moving forward, all keywords from organic search will be encrypted, or secured through the HTTPS protocol. From an SEO perspective, this means site owners and marketers will no longer benefit from organic referral keyword data.
Over the years, the amount of traffic from "not provided" referrals grew. This was evident on many websites I worked on during this time. This was not only due to an increasing number of users logged into their Google accounts, but also, back in the middle of 2012, Firefox 14 included secure search in its search bar. This was shortly followed by Safari on iOS6. Then earlier this year, Chrome started encrypting search performed through its address bar. All of this contributed to progressively growing "not provided" referral traffic.
In September, something drastic occurred. Something that seemed to confirm "not provided" was going to be 100 percent across the board. The chart in the media player at right illustrates the trend of organic referral traffic to a website from "not provided" keywords dating back to August 2011. October 2011 was when "not provided" first appeared in Google Analytics, and since then there has been linear growth over time. Some of this was due to an increase in overall organic search traffic, but also the various browser updates mentioned above. In September 2013, at the tail end of the chart there is a sudden spike of "not provided" traffic. That is basically when Google started turning off the switch on organic keyword referrals.