Are there any parenting forums?????

[Chicken]

I have a friend in need who is a lone Dad. 

He is constantly worrying about his parenting skills and I would love to be able to refer him to a discussion forum/message board as good as this one, that he can meet others in the same situation and get support and advice

Please, please, please, if anyone knows of a busy, informative one, can you let me know.

I have tried to google it, but I haven't found anything appropriate yet

Much obliged