This extension does exactly what it claims. It is easy to install, easy to use and has potential far beyond my use of it. There is lots of scope to make adjustments and it is intuitive for the front end user. It works with responsive templates to render beautifully on mobile devices which indicates that the developer has skillfully considered the functions provided for all users. I can heartily recommend this extension. My only reservation is that it lacks spam protection although all questions submitted are moderated. A very useful touch would be a link to whatever CAPTCHA is available in Joomla so that guest visitors can be screened - perhaps in a future release? Then it really would be perfect - but it comes very close.
thanks for your review
i think i really forgot this feature for guest user
i will add it in close future