"203,900 kids were abducted in 1999 by family members or parents. Approximately, 58,200 were 'non-family' abductions — only 115 were defined as the frightening kidnappings by strangers." -- http://abcnews.go.com/US/story?id=91365&page=1
Unless almost all of the family cases are non-custodial parents, your claim of hundreds of thousands seems a bit exaggerated. Some of these must be custodial parents, uncles, grandparents, siblings, and so on.
I think 'non-family' means acquaintances, minus the 115 cases of abduction by a stranger.
BTW, in addition to wikipedia's contribution to society of a free encyclopedia, I think this phrase is a great contribution. As Gerry Sussman says, "once you can name a spirit, you have power over it."
http://freakonomics.blogs.nytimes.com/2009/01/06/the-cost-of...