I wanted to echo everything everyone said including HoosierMommy's original post. I agree very much with ColinsMum.
The moment I heard about the different levels of G, I was consumed by doubt and anxiety and embarassment and cuiosity and mostly denial but that was almost 3 years ago and further research, talking to other parents of GT kids convinces me that DS falls in the HG-PG borderline with some PG+ in certain areas and MG in others. I fall into the trap of doubting this often though as we have almost zero exposure to the "real-world". All of DS friends are at least HG (at least I think so) and we homeschool and are of the introverted, slightly non-socialized variety. And of course my child doesn't display typical giftedness all the time. Sometimes he's down right absent-minded or suddenly will have trouble adding or subtracting (but don't we all sometimes?).
All I know is this is one of the places I feel safest to lurk and post once in a while. I don't feel judged and I don't feel as if anyone is trying to belittle the anxieties I feel. I don't feel like the odd duck in the pond like I normally do in a few other forums.