I never used stackexchange (I do use stackoverflow :) ).
Looking at Area 51 (before becoming public and active), there are some interesting areas but it shows some difficulties in passing the "public beta" target. For example, Machine Learning was Closed, and Matlab is open but with only 33 participants.
I searched with "Applied Mathematics", "Operations Research", "Gretl" and did not find meaningful groups.
Searching with "Statistics", found "Data Science" in public beta but not in the criteria to be Launched, and "Statistical Analysis" already Launched.
I searched with "Econometrics" and found "Economics" which is Closed after 206 days in Beta.
(found a community of my interest "Software Quality Assurance & Testing" ;) )
Well, after these searches I am pessimistic on trying to create a Gretl community, but if the community would be Econometrics less pessimistic.
Finally, the "Statistical Analysis" community is named, Cross Validated and the intro text is:
"Cross Validated is a question and answer site for people
interested in statistics, machine learning, data analysis, data mining,
and data visualization. It's 100% free, no registration required."
There are questions specific to applications like R or SPSS, for example:
- "How to analyze 2^k design with replicates in SPSS (or R)?" (no answers)
- "Is there a method to plot the output of a random forest in R?" (two answers)
This is to conclude that a specific Gretl questions could be asked and answered there. A search in this community with "Gretl", returned 60 questions, and the following stands out with 11 upvotes to one of the 3 answers:
- "Which statistical software is suitable for teaching an undergraduate introductory course of statistics in social sciences?"
We can also observe Tags for the questions, like "eviews" and "gretl".
What can Allin and Jack do?
(the mailing list should exist for ever!)