> I'm currently trying to ensure that my current client 
> builds suitable safeguards into a similar feature they're 
> proposing to deliver.


Well surely it can't take much; something like SELECT * FROM
'active_news_articles' where 'published_date' => date(today)-90days?


(I know that's a horrible mangling of SQL syntax, but you get the idea :P )
As far as safeguards go, it can't be that much more difficult at the
simplest level to filter out the old stories. Nobody cares whether a really
old story is popular or not... because it's old. ;)

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