Google has been shutting down some of its products and divisions over the past few months. Now the company has announced to shut down 7 more of its products over the coming weeks and months. Urs Holzle, Senior Vice President of Operations in Google, wrote in the Google’s offical blog spot, “We are in the process of shutting a number of products which have not had the impact we had hoped for, integrating others as features into our broader product efforts, and ending several which have shown us a different path forward.”

Google has named this operation as "off-season spring cleaning series" and this is the third session where Google is shutting 7 more products. In September, 2011 Google started its first round of spring cleaning where it announced the death of Aardvark, Google Desktop, FastFlip, GooglePack software bundle, Google web security, Google Notebook and Sidewiki. In the second round, Google shuttered Google Labs, Code Search and Buzz. After the launch of Google+, Google will remove social feature on January 2012 from iGoogle and it has already removed social feature in Google Reader.

Now it’s the time for the third round of spring cleaning where Google has announced to kill 7 more products. Here are the details of the products.

1. Google Bookmark Lists
Google Bookmark lists is an experimental feature for sharing bookmarks and collaborating with friends and it is ending on December 19, 2011. All bookmarks within lists will be retained and labeled for easier identification, while the rest of Google Bookmarks will function as usual. As a list was an English-only feature, non-English languages will be unaffected. Google Bookmark lists was launched on October 10, 2005. It allows users to bookmark favorite websites and add labels or tags, and also notes. Users can access their bookmarks from any computer by signing in to their Gmail account.

2. Google Friends Connect
Google Friend Connect is a free social networking site established on the 12th of May 2008. It is similar in practice to Facebook Platform and MySpaceID, it takes a decentralized approach, allowing users to build a profile to share and update information through messaging, photographs and video content via third-party sites. These sites act as a host for profile sharing and social exchanges. This service will be ending on March 1, 2012 for all non-Blogger sites. Google also suggests affected sites to create a Google+ page and place a Google+ badge on their site so they can bring their community of followers to Google+ and use new features like Circles and Hangouts to keep in touch.

3. Google Gears
Google Gears is software offered by Google that enables more powerful web applications, by adding new features to your web browser. It allows some online files to be used offline. In March Google said goodbye to the Gears browser extension for creating offline web applications and stopped supporting new browsers. On December 1, 2011, Gears-based Gmail and Calendar offline will stop working across all browsers, and later in December Gears will no longer be available for download. Google also said it’s a part of their effort to help incorporate offline capabilities into HTML5. For example, you can access Gmail, Calendar and Docs offline in Chrome.

4. Google Search Timeline
Google search timeline displays a historical graph of result for a query. Users will be able to restrict any search to particular time periods using the refinement tools on the left-hand side of the search page. Additionally, users who wish to see graphs with historical trends for a web search can use google.com/trends or google.com/insights/search/ for data since 2004. For more historical data, the ngram viewer in Google Books offers similar information.

5. Google Wave
Google Wave was first announced on May 27, 2009. It is a web-based computing platform and communications protocol, designed to merge key features of media like e-mail, instant messaging, and social networking. Google stopped the developments on Google Wave over a year ago. But from January 31, 2012 Wave will become read-only and you won’t be able to create new ones. On April 31, 2012 Google Wave will turn it off completely. Google says if users like to continue using this technology, there are a number of open source projects like Apache Wave and Walkaround.

6. Knol
Google launched Knol in 2007 to help improve web content by enabling experts to collaborate on in-depth articles. Knol has no policies regarding sources or neutrality. Some Knol pages are opinion papers of one or more authors, and others describe products for sale. Some articles are how-to articles or explain product use.Knol will work as usual until April 30, 2012 and you can download your knols to a file or migrate them to WorldPress.com. From May 1 through October 1, 2012, knols will no longer be viewable, but can be downloaded and exported. After that time, Knol content will no longer be accessible.

7. Renewable Energy Cheaper than Coal
In 2007 Google has launched our Renewable Energy Cheaper than Coal (RE). Google said that it believed other institutions were better positioned to take its renewable energy efforts to the next level. So Google has published its results to help others in the field continue to advance the state of power tower technology, and closed their efforts. Google will continue its work to generate cleaner, more efficient energy including on-campus efforts, procuring renewable energy for data centers, making data centers even more efficient and investing more than $850 million in renewable energy technologies.