I, too, missed the window, but I had a response to shannon's question, "What's it like to be an introvert and so painfully shy..."
Perhaps this was cleared up in the original thread. But I am not shy. I'm not even reserved, normally. I am an introvert. I love being social and I love hanging out with people. But. I find it exhausting. It sucks every last bit of energy out of me, even if I'm having a great time and love the people I'm with. So I need down time, alone, after social events. Take a road trip with somebody? By the end, I want to unplug my phone and computer, lock my doors, pull my blinds, and speak to nobody for a few days. Extroverts would go crazy without a social life. I would go crazy without weekly Me time.
Shyness, IMO, is a whole other critter. I'm not the least bit shy and can have a conversation with anyone and find all people fascinating, beautiful, and interesting.
The difference between introversion and shyness has already been discussed, hasn't it? :>)