Google frequently change their natural search algorithms, but they also change the way visitors from these searches reach your website. The latest impact here has been a change in the query parameters passed through to the website.
Up until October 2011 it was possible to see the actual search phrase that all visitors used on Google before reaching your website. From about 18th October this no longer happens for users signed into a Google account. Instead these visitors are shown as having a search keyword of (not provided).
We have been analysing the impact of this on various websites we manage. Initial results one month on show an average impact of just 1.5%. By this we mean that on average 1.5% of search results give a keyword of (not provided). This is based on looking at a large number of websites and well over 1 million website visitors. But the true values vary enormously between website, from zero (on a website with well over 21,000 visitors per month) to over 4% for a B2B website.
The aim of our initial analysis was to determine the impact on analysis. At the moment for 50% of websites this is negligible, and is worth considering on about 10%. But an unexpected benefit of this Google change is to give useful information on visitor behaviour.
Google are now giving information on which visitors are logged into a Google account when searching. This is rather useful. In fact perhaps more useful than keyword data on the small percent of users who are logged in. So much for this ‘privacy policy’ change!
We, like many online marketing experts, believe the true reason for the change is to persuade businesses soon to move onto a paid Google analytics platform.
