It seems like the good folks at Google like to change things up, even in their bread and butter search segment, which they did last week. If you missed it, it’s that some of us signed into our Google accounts are getting redirected to https://www.google.com, note the “s”. Most are certainly in favor of more security, in particular with companies like Google which have a large volume of our preferences even in innocuous things such as search. But what Google has done is taken the step of stripping referer data from links referred to from pages that are search via SSL connection. This just clicked last Tuesday and I can see an appreciable uptick of what Google now call “not provided” keyword searches in a Google Analtyics account report:

Google Analytics

Sorry for all the redacting blurring.

If you want to look for yourself, it’s under traffic sources/search/overview and then select “keyword” in the viewing selector. And if you want a deep dive on all the implications on this switch from the best in the business on search, check out this post on Search Engine Land.