A Quiz: Test Your RSS Smarts - What is a...
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Question: What is a GUID?
Answer: A GUID is a globally unique identifier. The RSS specification strongly suggests that each RSS feed item have a unique GUID. If you are creating feeds, a GUID is important because GUIDs are often used by feed readers and aggregators to determine if a feed item is new or simply an existing item that has been updated. Each item in the RSS feed should have a different GUID.
About The Author
Sharon Housley manages marketing for FeedForAll http://www.feedforall.com software for creating, editing, publishing RSS feeds and podcasts. Interested in additional RSS FAQs visit the RSS Knowledgebase http://www.feedforall.com/knowledgebase.htm or subscribe to the RSS knowledgebase feed http://www.feedforall.com/knowledgebase.php
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