be2f37df_er_Checklist___SearchTools_com__Action
[Content] Publication Dates [Action] 
Web page publication dates are currently derived from the page modification date. This is often wrong, as the page can be opened and saved without any changes. Future systems will store a publication date in the metadata, so an indexer should be ready to get the date from the contents of the page when that system becomes standardized.
Indexing Robot Crawler Checklist - SearchTools.com
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