Should the comment be removed once it becomes obsolete?
63298
Should moderators delete obsolete and resolved comment threads?
141041
Migrating a question deleted a comment
138722
The system sees a comment that doesn't exist
27808
Can we have a more relevant message when the deletion of a comment fails?
122092
How can I remove all comments from a file?
114053
How do I remove default comment validation in drupal 7?
92948
Allow Comments on Deleted Answers
40120
Are comments discouraged in a BibTeX file?
97539
Etiquette for revision comments
106409
Don't automatically clear the possible comment abuse flags when a post is deleted by the owner
133182
"Comments disabled" should not be a link
31985
Should a user be forced to add a comment when they vote to close?
43457
Don't delete comments with link to duplicate if they are modified
107699
When should comments be flagged/deleted on per-site metas?
17113
Dupehammer creates and deletes a comment, causing notifications to go out
149244
If I leave a comment, then delete it, does a person still get notified?
120108
Commenting interpreted code and performance