My ds is 7 on Tuesday, and loves a website called Moshi Monsters. He plays games and really enjoys the site, and they can send messages to each other.
My concern is that anybody could be sending these messages, we have no way of knowing who it really is. Probably it is other children chatting, but I now check his messages every day after he received one: "do you wanna be my boyfriend?" which he didn't like and deleted.
He listed all his toys to a 9 year old boy and they are complaining about little sisters, etc.
This is a new one for me, I wasn't expecting to have concerns about these things so early! Do your dc's go on similar websites at this young age? My dh found it and introduced it to him, but I feel he is still a little too young for internet chat.