How is it possible to post an empty answer?
32621
You can make a mostly empty comment/post using link Markdown
96392
Comment on a question without 50 reputation points
5563
Asking users to accept answer when they comment that it answers their question
27040
Is posting someone's comment as an answer okay?
101932
Make Seeing Deleted Answers Optional
50556
Force Accepted Answers on Questions by Inactive Users
147438
How can I help correct an answer if I don't have enough reputation to comment?
19115
Mark a comment as the answer to a question
3331
How does accepting an answer work?
68751
Unable to post any answer or comment with UNION - ALL
64690
Should "Closing this question because I didn't get an answer" posts be flagged as "not an answer"?
35162
Duplicate questions without answers
60001
How can I post an answer with many links, or earn that privilege without being allowed to post such quality answers?
71476
How to deal with duplicate answers posted long after first answer(s)
106314
Why the question author is totally blank?
59893
How can I correct this code to get an answer?
82426
How to handle users who don't select answers for their questions?