As far as teaching sex, my feeling is when the opportunity arises, take it. My kids were about 9 or 10. We were outside and the cows were busy. =) They asked what the cows were doing, and I explained. Do people do that too? Yes, but not that way. I explained. It was all very natural. I didn't look for a moment or sit them down. I had not expected to tell them that young, but they asked the question and I have always tried to answer their questions about the world honestly. I answered their questions matter-of-factly, as if they had asked where rain comes from. I only answered what they asked, no extra details. As time went on, they came back with more and more questions.

My views have changed since then on some things. I'm more open-minded. I wish I had done some things differently, but I think I did ok.

As far as touching and playing doctor, they start exploring as young as 6 or 7. I wouldn't encourage it, but I wouldn't make a big deal of it either. I would give them something else to do.

I agree with FF, sex brings with it a lot of responsibility. That is why it should be discouraged until a child is older, in my opinion. He/she has to be able to handle that responsibility. The age? It depends on the child. But around 15 and older is usually a good age. (For some kids younger) Kids will explore and have a real need for sex at this age for sure. I would encourage them to wait on intercourse, though, again because of the responsibility factor. If they are in love, petting, mutual masturbation, etc. might be enough for a while. I would hope it would be.

As far as underage dominants or submissives go, well I think most of us had our tendencies already pretty much defined by the time we reached our teen years. If that is what they like, then we would be hypocritical to not accept that just because they are young. For legal reasons, however, they should be kept out of websites such as this.