While I was deciding whether or not I wanted to invest the time needed to get into something like that, I put a post up on Kboards directing forum members to a survey. (draft2digital.com)
The independent KBoards forum (previously Kindleboards) is another useful place to look. (cormackcarr.com)
Quite a few posts on the indie author discussion site KBoards Writers Cafe reflect a concern, even an obsession, with writing and publishing as fast as possible, for fear of failing to generate sustainable sales. (bidinotto.com)