Well, my DS was 10 when he found his first xxx rated site. Let me preface that by saying he has absolutely no interest in girls, but he and a friend were being silly and decided it would be funny to type in b**bs and lo and behold, DH walked in to check on them and found them in front of absolute pornography. We went back through the history of that incident, and they had been typing in all kinds of dumb things, and apparently that was the first x rated site they had come across, so thankfully they didn't see that much, but what they did see was absolutely inappropriate in every way, and led to a big discussion, not only of internet limits, but of sexuality in general.......WAAAAY more than we thought we'd be discussing with a 10yo. We were always so worried about him not giong to violent sites, didn't think we really needed to worry about x-rated sites. That said, we still don't use a censor program or anything, the main computer came with a program that limits the kids sites they can visit, in terms of violence or explicit content, but the laptop doesn't so we have had big and numerous discussion about what sites are appropriate and why, and DH and I look through the history, and see what sites the kids have been at. We have moved the downstairs computer up a level, and no laptop in the bedroom when friends are over. I check in much more frequently when he is on the computer, especially when he has friends over. He has not been back to any sites of the x-rated variety, but it is a struggle to keep limits on all those gaming sites that seem to promote mindless violence, which we try to limit pretty strictly. Also we try to limit the sheer amount of time he spends on it, he used to wake up really early, like 5 a.m. to use the computer, and now he is not allowed it in the a.m. before school, I put passlock on the laptop, and DH set the main computer to deny the kids access in the weekday a.m.'s and we try to limit it after school to 1 hour or less, actually he times out on the main computer at 55 minutes, so I catch him trying to sneak onto the laptop sometimes.... Our other kids are 8 and 5, and they aren't really into the computer beyond occasional use for webkins for the 8yo and fisher price online games for the 5yo.