I personally haven't heard the expression mom-with-a-camera before, but I know the trend well. This is a very interesting article from the New York Times about how affordable digital cameras are allowing moms to start side businesses photographing children without any formal training.
Check it out here.
Thanks for sending, Arn (my former boss from the Cape Cod Times, so you obviously know his thoughts when sending. For more discussion, check the comments on this post).