Nathan Osman

If you’ve written a question or answer on any Stack Exchange site and you would like to share it with your readers, you are no longer limited to pasting a static link. Instead, StackTack will embed a live widget with the contents of the question and some of the top rated answers.

StackTack

StackTack is a JavaScript widget that displays questions from Stack Exchange sites.

bauc

WPQuiz allows you to create a quiz (one or more questions/answers) and add it to any post/page using the built-in tags [wpquiz id=?] and [wpquiz_text][/wpquiz_text]. After installing, you can create a new quiz or edit the sample one by accessing it from the admin Dashboard->Settings->WPQuiz. Once you’ve created a quiz there you can easily add it to 
a post/page from the Add/Edit post/page editor’s WPQuiz meta box. The plugin stores its questions/answers in two tables in the database.
The answers are not stored, only checked and shown back to user. Storing and/or giving more feedback is planned for the next release, comments welcome.

WPQuiz

WPQuiz allows you to add a simple quiz/questions to any post/page

StackTack vs WPQuiz