This proposal is for Stack Overflow only, where questions usually get an objective answer, and where the answer rate is pretty good.
If a user has asked several questions, and hasn't accepted a single one, ever, after several days, then provide a message (that can be dismissed) at the top of the screen saying
You have not accepted an answer to any of your questions. Consider accepting an answer if it has solved your problem.
Similar proposals:
- http://meta.stackoverflow.com/questions/80084/getting-new-users-to-accept-answers - different threshold, doesn't allow the user to dismiss the message
- http://meta.stackoverflow.com/questions/32553/dont-allow-people-with-very-low-accept-rates-to-ask-questions - different threshold, forces users to improve their accept rate rather than suggest it
- http://meta.stackoverflow.com/questions/69775/remind-new-users-to-choose-some-answers - different threshold, forces users to improve their accept rate rather than suggest it
