Why do I need at least 50 reputation to post a comment?
2514
Why do I need 50 reputation to comment? What can I do instead?
81268
I can't review posts anymore—was the minimum reputation changed?
91074
Please warn about exceeding 50 question limit prior to asking a new question
141234
Should we have a down-vote “safe zone” for new users with less than 50 reputation?
50625
Can't flag an up voted comment
8000
How do comments work?
6193
Deleting a comment (mine) shouldn't count as a comment vote
74354
Indication required for up voted comment in Android app
85087
Answer from a user with 9 on-site reputation but protect option is not available (in sufficiently old question)
87689
Can users with less reputation be allowed to chat?
45621
How to get initial reputation on Stack Overflow with the new-user restrictions in place?
5677
Why can't we downvote our own posts?
15280
Automatically generate comment with link to a "what does downvoting mean?" post when a user with <50 rep has a question downvoted
139520
Why don't we allow low reputation users to insert more than two images in their posts?
119103
Allow downvoting comments
129616
Why are there so few posts with zero comments?
148524
Why does Stack Overflow prevent new users from commenting?