Google and Personalized Search
Early this month Google announced that they would be tailoring everyone’s search results based on their search history even when users are not signed into Google. Personalized results are nothing new on Google. The search giant has been customizing peoples SERPs (search engine results pages) for quite a while already, but until now it only happened when you searched while signed into your Google account. Today, signed in or not everyone gets personal results.Here’s How It Works
Whether you’re signed in or not, all the searches you run on Google are stored in your browser cookies. This data is referred to as your ‘Web History’ and Google uses it to customize your search results. If you’re not signed in, your Web History is stored for 180 days, then old data is replaced with new searches. If you’re signed in, there’s no time limit and you can manage you Web History. Either way the searches you run and sites you visit will affect your future search experience.
The sites you visit more often will be pushed higher in the search results on related queries. For example if you search for ‘cat food’ and visit www.petfood.com, next time when you search for ‘dog food’ you may see www.petfood.com in top 10 results even if it doesn’t rank there in the general impersonalized search. You can tell that your search results have been personalized by the ‘View customization’ link in the upper right hand corner.
The personalized search results can differ significantly from the general SERPs. I ran a couple of tests searching for related keywords and clicking the same site each time. I also checked this site’s rankings with a rank checker to get a list of impersonalized rankings. In one of the tests a few click-throughs to a site pushed it 26 positions up on a highly competitive keyword. That is from the 31 position on page 4 straight to the 5th spot on the first page in personalized search results (I was signed out). read more …