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by Karrot_Kream 804 days ago
> What is your definition of a new user?

A poster that joined in the last 2-3 years.

> I am curious: Can you elaborate on how such analysis is being made?

Try doing analysis on the time at which posters in a thread joined this site. I weigh their dates based on the number of times they comment in a thread. If you do that you'll see a recency bias. The mass of the distribution is clumped more heavily in the last 3 years since the article's submission. If you think about it, that makes a lot of sense. People are probably much more energized to comment when they first join and eventually get bored and stop. You point out a really similar effect out in your own analysis about posters that stop posting after a year.