Just had to add my 2 cents worth...
Being a mother of 7 children, I have certainly had to think about potentially dangerous situations. And just when you think you have ALL potentially dangerous situations covered, there's always a new one that you NEVER thought of.... If parents could safeguard their children against everything, we'd have a near-perfect world.
Unfortunately, bad things happen.... However, with regards to the GOH badges, I think some people are letting their paranoia get in the way. As others pointed out, all it would take for anyone is to stand by your group and listen for a few minutes, which they would be doing anyway if they were intent on grabbing your child. In that 2-3 minutes, I guarantee you that you, your DH, grandma, or a sibling is going to address another child by their name. I would hope we've all talked to our children regarding strangers...and I've stressed to ALL of my children that just become someone knows them by name, it does NOT make them a non-stranger.
If you say that your child is too young to understand
that rule, then your child is probably too young to recognize ANY stranger, whether they call your child by name or not.
I know it only has to happen once, but I haven't heard of any child-nappings from WDW in all the years they've been open.
My kids wore their GOH badges, and the attention they received from the characters, as well as the CM's, was WELL worth it!
I say, GO for it!!!
