Watch or favorite answers, not just questions
20118
Is there any way to favorite/bookmark an answer?
50407
Can I draw attention to a well deserving answer on my question?
119730
Etiquette for selecting answers
105034
How to get new answers to old/popular questions read/voted on?
128084
Search viewed questions
139639
What can cause the Community user to have favorite questions?
128221
Promoting comments to answers
134897
How do I get notified about a new question in my favorite tag?
142069
Would it be helpful to be able to link to specific answers?
52024
How can I link to a specific answer?
35050
Android app - can I see interesting questions?
37240
Flagging "look at my answer pls" comments
138305
Automatically suggest asking on another site
154418
Is it possible to search for posts where the OP self-answered?
113886
Allow grouping of favorite questions
114085
Option for choosing the Stack Exchange sites to show on "realtime questions"
113988
Addition to faq or /ask: Stick around