Before I ask my questions, I wanted to preface by stating I understand everyone has their own thing that gets them off. In no way shape or form am I judging people on what they like.
Still sort new to the whole experience and haven't quite nailed down all of the acronyms yet. When I see reviews (and since i'm not a paying member yet, I only see the summary) I notice a FIV and/or FIA from time to time. I'm just curious as to a man's take on what makes it pleasurable for him to stick his fingers there? I would do it to stimulate the woman, which in turn makes it more pleasurable for me knowing she's enjoying herself. Do some providers not allow this, hence why people writing reviews make sure and list that activity?