#3 Zeitgeist

It was the service that collected lists of the most frequent search queries. There used to be weekly, monthly and yearly lists, and topic and country specific lists. Closed 22 May 2007 and replaced by "Hot Trends, a dynamic feature in Google Trends". An annual Zeitgeist summary for the US and other countries is still produced.

 #2 Google Labs

Google Labs was a page created by Google to demonstrate and test new projects. Google described Google Labs as "a playground where our more adventurous users can play around with prototypes of some of our wild and crazy ideas and offer feedback directly to the engineers who developed them."In July 2011, Google announced that they were discontinuing Google Labs. Many of the experiments have been discontinued although a few have moved to the main search pages. The Google Labs pages now redirect to the main Google pages. Google still has many links to its defunct "lab" tools in Google blogs that are readily accessible through a Google search.

#1 Google Lively

It was a web-based 3d animated chat room program, where you could have created avatars and surroundings. Lively was only supported on Internet Explorer or Mozilla Firefox, using Windows XP or Windows Vista. It required a special download as well as Flash. The service was discontinued on December 31, 2008, after only 6 months of its existence.

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