Curiously I see an example of duplicates with slightly different points. Maybe something is not enclosed properly in a transaction and the list is being generated partly before and partly after an update has been applied.

On the 100 points version I see:

27. The only script in your head (headjs.com) 248 points by timf 12 days ago | comments

28. The only script in your head (headjs.com) 247 points by timf 12 days ago | comments