Unschooling seems to really work right now for Thing 1. We're going to take a much mroe structured turn in a few months, but so far, I don't feel like I've ruined him with unschooling.
Take this conversation for instance
"What does it mean when you put an is-is on the end of a word?" (that's seriously what it sounded like he said)
"You know, when you have the little line up on the top and then an s"
"OH! An APOSTROPHE and then an S"
(insert explanation on what the apostrophe S means, including examples)
"What about when it's an s and then an apostrophe?"
"Ooooh so it's like *insert going on for five minutes about different examples he's read recently*"
He better not throw off grammar studies like he did read :P
(and now he's playing on KIDO'Z on the Nick Jr site and learning different words in Spanish... *sigh* Slow down my young one, slow down)