Well, the first time I did, was in the very first episode of Ren's Radio Diaries. I emailed someone at my school and asked them if they could send out a google form, similar to the one up there, and they did.
I got over 70 responses, which is honestly more than I thought. So I answered the ones that I thought would be entertaining. I haven't gotten any new responses, but when I do I will be answering them in an episode!