• Application Servers

• JBOSS
• WebSphere
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• Cellular/Mobile Phones

• IPhone
• Android
• General
• Blackberry

• Database Management Systems

• MySQL
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• PostgreSQL
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• DB2

• Hardware

• Hard Disks
• Computer Chips
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• Keyboard
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• Processors

• Internet Browsers

• Mozilla Firefox
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• IT Vendors/Companies

• Google
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• Sun Microsystems
• Adobe Systems
• Hewlett-Packard Company (HP)
• Intel
• Advanced Micro Devices (AMD)
• Cisco
• Open Source
• Yahoo
• Verizon Communications
• Amazon.com, Inc.

• Libraries

• OpenSSL

• Linux Distros

• Fedora
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• Suse
• RedHat
• Yellow Dog
• CentOS

• Operating Systems

• Linux
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• Popular Websites

• Twitter.com
• YouTube.com
• Digg.com
• Monster.com

• Search Engines

• Bing
• Google Search
• Yahoo Search
• Ask.com

• Servers

• Apache Web Server
• vsftpd FTP Server

• Social Networks

• Facebook
• MySpace
• Other Social Networks
• Hi5
• Friendster
• Plaxo

• Technology

• Business
• Security
• New Feature/Release
• Software
• Development
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• General
• Cloud Computing
• VoIP
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• Blogging
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• Gaming
• ISPs
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• Clustering

• Virtualization

• VirtualBox
• VMware
• Virtual PC

• Web Development

• PHP
• Perl
• Javascript
• Web Design
• Adobe Flash
• Ruby
• Python
• Java
• AJAX
• Graphics Design

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• Big brands use Twitter to push corporate messages