Processby

Storky87

This plugin adds a question and answer page in WordPress. 
They can be displayed either list or divided into categories. 
Display all the questions on the page, or each question will have its own page with the answer.

WP Question & Answer

Adds a question and answer page in WordPress.

Timo Schiller

Kilomoana

This Plugin allows you to include a simple Textbox through which your site visitors can ask you short questions. 
You can answer them through the backend.
See it in action at: (http://kilo-moana.com/ask-me-wordpress-plugin/)

Ask Me

Great !

Simple Plugin to let your users ask questions.

WP Question & Answer vs Ask Me