Excluded
- SE sites with non-English interface (localized Stack Overflow sites and Russian language in Russian)
- Meta Stack Exchange
- Per-site metas, including Area 51 Discussions
- Stack Apps
- Private beta sites
- CS50
Limited (by hotness score)
These sites can still contribute the same number of questions to Hot Network Questions, but their questions need higher hotness score to be selected.
Heavily (80% penalty factor)
Quite (45% penalty factor)
- Software Engineering
- The Workplace
References: How is hotness score calculated at larger sites?, penalty factor per-site (higher value = smaller hotness score)
Limited (by number of questions)
The question on these sites can still end up in Hot Network Questions with the same hotness score, but that number is fewer than the default five per site.
- Interpersonal Skills - 1 question at a time
Past occurrences
- Christianity (quite limited by hotness score; effectively excluded)
- Sexuality (excluded)
- Interpersonal Skills (excluded)
