Great thoughts everyone. I appreciate all each of you have to say. It helps keep me sharp! Thank you! I wanted to post the question, just to make sure that I'm not out of the loop as to keeping the computers and on-line world safe.

I'll also share a little bit in hope that it might be of help to someone. We have found it necessary to password protect all our computers. We have used various filters in the past, such as Be Safe, but the reality is
nothing is as safe as parental supervision. I have learned the hard way. My children have limited use of the computer and it is highly supervised. My oldest who does have a blog, website, social media site,flicker, etc. sends copies to me of all correspondence to and from adults. He is allowed 4 hours total a week on-line and only when I am here to supervise. Although he in the past has corresponded on-line with females, we have now requested that he limit all of that correspondence to a public setting, such as Facebook - no private messaging, for example. He does not have a phone. He only uses our family's land-line. My children also know that in the event they should violate our parameters and visit or participate in any on-line activity we have not approved that they will never see the light of day...again.

That "understanding" really seems the most effective.
I'll also add this bit...with only one or 2 exceptions all the on-line problems we've experienced have involved not only our own child, but other homeschooled teens who are GREAT kids from GREAT families.
