OPML - Outline Processor Markup Language:
What Is An OPML File? OPML (Outline Processor Markup Language) is an XML format for outlines. Originally developed by Radio UserLand as a native file format for an outliner application, it has since been adopted for other uses, the most common being to exchange lists of web feeds between web feed aggregators.
Article99.com Syndication:
• Top Level Category OPML Feed:  
• Sub Level Category OPML Feed: (440 Categories)
• Top Level Authors OPML Feed: (500 Authors)
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Main Article Categories:
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• Advertising and Marketing
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• Animals and Pets
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• Arts and Entertainment
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• Automotive Guide
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• Business
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• Communications
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• Disease and Conditions
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• Education
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• Employment
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• Fitness Tips
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• Food and Drink
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• Games
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• Graphic Design
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• Health Tips
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• Home and Garden
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• Internet Marketing
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• IT Tech
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• Kids and Teens
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• Legal Advice
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• Money and Finance
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• News and Society
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• Real Estate
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• Recreation and Sports
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• Self Help
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• Shopping and Retail
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• Travel and Leisure
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• Web Design
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• Work At Home
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• Writing and Speaking
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