Here are some data dumps collected by the Sobotics team:
- 20000 New answers on Old Questions with complete JSON
- 10000+ new answers detected by Natty with feedback
- 1350 bad answers detected by Natty with feedback (on Ask Ubuntu)
- 5000+ old closed questions with complete JSON
- Complete JSON of the 2018 Stack Overflow Questionnaire polled every 10 minutes
Soon to come
- List of vandalized posts on Stack Overflow
- Encyclopedia de Coprolalia
All of the data is taken from http://api.stackexchange.com, and licensed under cc by-sa 3.0 with attribution required.