Your question is a fair one but I can only answer for myself. I have been a member here and on Pianoworld for over twenty years and I usually read many posts but reply to few. The one thing I have learned over that time is that I have a highly individual approach to music and to playing the piano. Although this is by no means a bad thing in itself I am wary of steering people in wrong directions, particularly in regard to classical music which, to put it mildly, I am not very good at. If I spot a discussion to do with, say, ragtime or free improvisation and I feel I can help someone then I shall do so.