Feature to mark a favorite answer
20118
Is there any way to favorite/bookmark an answer?
56823
Change how questions marked as duplicates by the asker are represented
101825
Feature Request: "WAKE UP and accept my answer please"
25593
Encourage users to select 'Accepted Answer' for old Questions
76054
Add a message when posting to old questions with more than N answers
35575
Automatic tag suggestions
38479
A note making feature in the personal page
47581
Marking comments as 'addressed by edit' to reduce noise
99348
Favorite/Unfavorite tags in iOS app
88412
Star vs Heart icon to represent save as a favourite
32498
Should a suspended account be able to mark a question as a favourite?
145116
Better drafts feature for questions
133049
Way to convert an answer to a comment?
5563
Asking users to accept answer when they comment that it answers their question
48541
How to favorite a question from Android app?
157628
Autocomplete username references in answer posts
70256
Notify question OP (and those who marked it a favourite) if an answer has been modified