Smarterer API is now FREE to use
Smarterer released its API for free. Even if you're not into programming, you can still make use of this and give your site visitors a quick skill test (in just 10 questions and 120 seconds), by using their Smarterer Widget Builder.
Simply, search for a test and optionally name it:
and embed it to your widget area (wp terminology) on your site/blog:
Here are few examples you can try: