I'm not sure if this is the definition of "active" the have used, but:
<quote> Over time, these existing URLs saw less and less traffic as the years went on - in fact more than 99% of them had no activity in the last month.</quote>
I'm sure it's correct that the wast majority of links would never be used again, but to gauge which links this is I'd say you should measure at LEAST a year.
<quote> Over time, these existing URLs saw less and less traffic as the years went on - in fact more than 99% of them had no activity in the last month.</quote>
I'm sure it's correct that the wast majority of links would never be used again, but to gauge which links this is I'd say you should measure at LEAST a year.