If you’ve been to a course at Nant Gwrtheyrn you may have received this by email already, but posting it here anyway just in case. A student from Cardiff University is doing a study looking at courses offered by Nant Gwrtheyrn in comparison to other ways of learning Welsh … cue a great excuse to sneak in a bit about the advantages of SSiW 
The link is http://www.smartsurvey.co.uk/s/1XQ0Q/ which gives you a bilingual questionnaire with a full explanation of the study at the beginning.