Google has introduced encrypted search per 17th of October. It rolled out initially on google.com
At the beginning the impact seemed to be in the single digit numbers being about 2%-3%. Last week I started to notice a dramatic increase on these numbers, so I decided to do some historical reporting on the percentiles.
The rise of the numbers started per 31st of October and this appears to be happening on different types of websites and across industries. The numbers now reach the figures of +10% and people are seriously getting worried.
According to Google the roll out was expected to take place in several weeks. Currently only Google.com is taking part in this roll out. We expect this rollout to occur soon in different places and not just on google.com.
With numbers reaching the double digits and averaging 10%-15% you would say there is a huge loss of data there that might have proven to be very valuable for your onsite optimization. It would be an interesting case to see if Google Webmaster Tools is able to give you a general idea of keywords used that do not show up in your keyword reports. Will this SSL change impact the trend on your keyword reports? Did your Adwords Search Query report just became a whole lot more important? Do you think this change affects the way SEOs or web analysts do their job? And did you already explain this SSL change to the people you are reporting to?