Artashes,
I agree with you on the maturity issue. However, I have called business before who had their parents answer the phone. We were no longer with that company after that but that is besides the point.
The best one I have ever had personally was one of my clients called my cell because our toll free number forwards to it if I am not at the office. Well I was with the girlfriend and I was busy dealing with something and she answered the phone.
I guess it is a good thing that the customer who was on the other end has turned into a good friend and he thought the girlfriends voice was hot. He told me she needs to answer the phone more often.

I agreed!
Other then maturity do you think that there is something that sperates children of "kiddie" host to children of professional hosts?