Timeline: The Showing The Most Important Changes In The Last Two Years
Google makes 500-600 updates to their algorithm every year! Some of the fundamental principles that Google have been looking to achieve with their search engine are: improve speed of results; improve relevance of
results; increase the amount of time users spend on Google.
- 2009, Feb 5. Google latitude replaced Dodgeball as location-aware mobile app. It also lets mobile phone users share their location with friends.
- 2009, Feb 25. The canonical tag introduced. A tag for avoiding duplicate content which points to the original page.
- 2009, Feb 26.Branding. More weight is given to brand names and related sites.
- 2009, Apr 4. Google improves local search based on the IP address.
- 2009, Apr 12. Personalized search. Results are customized to reflect the behaviour of the user. The more often a site is clicked on through searching will appear at the top of the results.
- 2009, Jun 2. New effect of the nofollow attribute. The PR is first distributed among all the links (with or without nofollow) and then not distributed to the nofollow links. Onclick links are taken into account.
- 2009, Jun 18. Google maps merged with organic results. When a query includes the name of a location.
- 2009, Jun 19. Flash resources indexed. Indexing text and images from flash based files.
- 2009, Jul 2. Less weight for irrelevant backlinks. Those includes blogroll, backlinks from social sites, footers in partner sites and links included CMS templates.
- 2009, Jul 3. Search result pages simplified.
- 2009, Jul 9. Images can now be sorted by license agreement.
- 2009, Jul 31. Showing more results. Clicking on + show more results provides a dropdown of more results from the same site.
- 2009, Aug 11. Caffeine. Google's algorithm for 2009-2010 providing faster and more relevant results.
- 2009, Sep 9. New interface. The size of the input field has been expanded.
- 2009, Sep 26. Internal links to pages in search results.
- 2009, Sep 30. Links from forum threads in SERPs. Results include links to topics of forums that can answer question.
- 2009, Dec 11. Instant search. Real time results displayed as you type.
- 2009, Dec 15. Canonical cross-domain to avoid duplicate content between similar pages on different domain names.
- 2010, Feb 1. Google acquires Aardvark, a "social search" service that relies on a user's contacts to provide answers to questions.
- 2010, Feb 9. Google launches Google Buzz, a social networking and messaging tool that is integrated into Gmail.
- 2010, Feb 16. Highlighted sponsored links in results. They are marked with a yellow rectangle.
- 2010, Mar 12. The speed of s site is a ranking factor. Favouring faster, loading websites.
- 2010, Apr 27. Black Tuesday. ranking changes on the long tail (the set of pages on a site that make few visit each but all together have a large traffic). Query on multiple keywords, make the long tail. Some sites
have lost up to 90% of their traffic because of this change in Google algorithm.
- 2010, Jun 8. caffeine builds a new index with 50% fresher results. Caffeine updates the index incrementally with new pages being indexed as soon as they are discovered. Differing from previous updates which were
periodically updating as a whole.
- 2010, Aug 20. More than two results for the same domain. So far the same domain could not appear more than twice in one page of results. Now certain queries can retrieve more results from the same site.
- 2010, Nov 5. A modification of the algorithm on the ranking in results affected a lot of sites, some losing up to 80% of their traffic. The purpose of these changes would be to improve the relevance of results.
- 2010, Nov 1. Instant preview. The magnifying glass icon emerges with thumbnail previews of a site.
- 2010, Dec 1. Google announces first Chrome OS notebook, beta testing program.
- 2010, Dec 15. Sentiment analysis added to the algorithm. This aims to recognise if the text surrounding a link is positive or negative towards it, depending keywords it contains to penalize sites that we complained.
being bad to your customers is bad for business.
(c) 2011 Elevate Local | Source: http://googleblog.blogspot.com.