Fic Talk

Sometimes I get reviews for fic that mention pretty deep stuff I didn't even realise I had put into my writing. Occasionally it was unintentional and I didn't see it at all and other times I did intend on putting it in but didn't realise how deep it could sound until I read the words of the review.

Does this happen to anyone else? Would you see it as a good or a bad thing? Any other thoughts?