I've noticed many 1- and 101-rep users contributing a lot of good comments and also some good questions and answers lately. (See, for example, What are the dangers of walking barefoot in towns/cities?). Is this correct? Any theories as to why this is so? Has this happened before, and if so, do these new users stick or do they wander off?
So I ran this query which shows the number of registered users over time and it looks like the rate of increase has actually slacked off some.
The Y axis is the number of users and the X is the number of months.
Some more statistics,
- 7.4% of users have over 200 rep
- 1.03% of users have over 2000 rep
0.77% of users have over 3000 rep
The top 10 most active users wrote 890 questions and 1684 answers for 26% of the questions and 20% of the answers.
In this month so far there has been approximately 6400 votes, 17% of that has come from the top 2 voters this month and the top 4 have contributed 21% of the votes.
The point I am trying to make with those statistics is that a great deal of the activity is being driven by a very small amount of users. So I don't think that there is a real uptick in usage from newer users.
As for why you are seeing a lot of activity from new users on that question is because it hit the Hot Questions and it's one of those questions where everyone has an opinion.