@Linkat,
Scary.
One of my friends on Facebook just asked other moms from our area what our rules are -- her 12-year-old wanted a Facebook account, she wasn't sure. I didn't comment because another friend has let her 8-year-old have his own FB account and I think that's stupid.
Sozlet has an email account, she doesn't use it much though. She mostly uses it for communicating with grownups, like grandparents and teachers.
That's scary stuff though. Seems like a great moment to talk about how dangerous the Internet can be, both directions. Something about tone is probably called for -- telling them to be sure to be very very clear and not leaving room for error/ misunderstandings.
For privacy, I dunno. I let sozlet have an email account with the understanding that I'd check it often. The FB discussion about kids on FB talked about that too -- the people who let their kids have an account check it frequently. I don't think I'd give sozlet complete privacy on email until later. I'm less concerned about what goes out than what comes in -- who she's talking to, what she's getting. She's just not sophisticated enough to recognize a lot of possible dangers. We've talked about that as it's come up, and that's been useful. One of those training wheels sorts of things -- give 'em a little freedom while monitoring, then a little more, then more, etc.