What is UDM? Presumably the U is Urchin but what’s the rest? | Hacker News

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		nailer 9 days ago \| parent \| context \| favorite \| on: Search tool that only returns content created befo... What is UDM? Presumably the U is Urchin but what’s the rest?

PaulDavisThe1st 9 days ago [–]

Never seen it documented.

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