1. List the companies Google acquired year by year.Briefly describe the strategic implications of each acquisition.

2001 Google Acquisitions
1. 2001-02-12 - Usenet Discussion Service and Significant Assets from Deja.com - Google Groups
2. 2001-09-20 - Technology Assets of Outride Inc - Online Information Retrieval Technologies

2003 Google Acquisitions
1. 2003-02-00 - Pyra Labs - Blogger
2. 2003-04-00 - Neotonic Software - Technology for Email Customer Support (CRM)
3. 2003-04-23 - Applied Semantics - Advertising Technology企業在線營銷管理工具
4. 2003-09-30 - Kaltix Corp - Personalized and Context Sensitive Search Engine Technology
5. 2003-10-07 - Genius Labs - Blogging

2004 Google Acquisitions
1. 2004-05-10 - Ignite Logic - Web Templates for Law Firms and Small Businesses ; Website creation technology
2. 2004-06-23 - 2.6% Stake in Baidu.com; 2006-06-24 ; Google Sells 2.6% Stake in Baidu.com - Chinese Language Search Engine
3. 2004-07-13 - Picasa - Digital Photo Management ; Photo management software
4. 2004-10-00 - Where 2 Technologies - Digital Mapping (Google Maps)
5. 2004-10-27 - Keyhole Corp - Digital Mapping (Google Earth)
6. 2004-12-00 - ZipDash - Maps and Traffic for Mobile Devices ; Used in Google Ride Finder

2005 Google Acquisitions
1. 2005-01-00 - 2Web Technologies - Google Spreadsheets ; Web-based spreadsheet
2. 2005-01-00 - Phatbits - Widget engine.
3. 2005-03-28 - Urchin Software - Web Analytics Software流量分析
4. 2005-05-12 - Dodgeball - Mobile Social Networking
5. 2005-07-00 - Reqwireless Inc - Java ME Browser ; Web browser and Mobile email
6. 2005-07-07 - Current Communications Group - Broadband Internet (BPL - Broadband over Power Line)
7. 2005-08-17 - Android(mobile phone platform) - Software for Mobile Phones ; Software for Handheld devices
8. 2005-09-15 - Transformic Inc - Search Engines for the Deep Web
9. 2005-11-00 - Skia - Graphics Software Engineering
10. 2005-11-17 - Akwan Information Technologies - Latin American Operations Center (Brazil, Mexico, Latin America) ; Latin American internet operations
11. 2005-12-xx - allPAY GmbH, bruNET GmbH - Mobile Solution Provider, Germany
12. 2005-12-20 - 5.0% Stake in AOL - Internet

2006 Google Acquisitions
1. 2006-01-17 - dMarc Broadcasting - Digital Solutions for Radio Broadcasting Industry ; Radio advertising software and platform.
2. 2006-02-14 - Measure Map - Web Analytics for Blogs
3. 2006-03-09 - Upstartle (Writely) - Web Based Collaborative Document Editor (Online Word Processing)
4. 2006-03-14 - @Last Software - SketchUp 3D Modeling
5. 2006-04-09 - Orion - Referential Search Engine ; Advanced search method.
6. 2006-08-15 - Neven Vision - Automatic Information Extraction from Photos
7. 2006-10-31 - JotSpot Inc - Wiki Technology for Collaborative Websites ; Website applications
8. 2006-11-13 - YouTube Inc - Consumer Media Company (Watch and Share Videos) ; Video sharing (San Bruno, CA)
9. 2006-12-00 - Endoxon - Geo Mapping Software ; Mapping solutions

2007 Google Acquisitions
1. 2007-01-00 - Xunlei (Partial Acquisition) - File Sharing Website ; Network, file-sharing
2. 2007-03-16 - Adscape Media - In-Game Advertising for Video Games ; Video game advertising
3. 2007-03-16 - Trendalyzer - Presentation Software
4. 2007-04-13 - Doubleclick - Advertising Technology Platform
5. 2007-04-17 - Tonic Systems - Presentation Creation and Document Conversion Technology
6. 2007-04-19 - Marratech - Video Conferencing Software ; Video conferencing (Stockholm, Sweden)
7. 2007-05-11 - Green Border Technologies - Secure Connections for Web Browsing and Email ; Desktop enterprise security
8. 2007-05-30~06-01 - Panoramio - Community Photos Website (Works with Google Earth) ; Geospatial Photo-sharing Service
9. 2007-06-01~03 - Feedburner - Feed Distribution and Management Tools ; RSS Feeds (Chicago, IL)
10. 2007-06-05 - PeakStream Inc - Multiprocessor and GPU Software ; Parallel Processing
11. 2007-06-19 - Zenter - Online Slide Presentations
12. 2007-07-02 - GrandCentral Communications - Services for Managing Voice Communications ; VOIP Phone Aggregation (Fremont, CA)
13. 2007-07-xx - ImageAmerica - High resolution aerial cameras
14. 2007-07-09 - Google to Acquire Postini - Services for Message Security, Archiving, Encryption, and Policy Enforcement ; Communications Security (San Carlos, CA)
15. 2007-09-xx - Tusli - Google Blogger Api Engineering Team
16. 2007-09-xx - Zingku - Mobile social network and communication platform
17. 2007-10-xx - Jaiku - An activity stream and presence sharing service that works from the Web and mobile phones (Helsinki)