Talking to a 10-year-old about porn

Ian in Hamburg is asking for help about talking to his 10 year old daughter about how she was exposed to online porn a few days ago.  Some of the comments are pretty good.  I don't think much of Google's filtering which is suggested a couple of times.  I still see questionable stuff on occasion.

One comment that "concerns me" is how 10 year olds should know about sex.  We didn't have that discussion in school until Junior High I believe. (12 and 13 years old maybe?)  Have we become that used to sex that it's more common at that early age?  That's kind of scary and concerning.  I thought we were getting a handle on teenage pregency.

Hmm, maybe we watched too much Dallas and Knots Landing way back when. :)

edit: There's even a website for having the talk.