I think both the article and mandalinn have great points. That's a really tall order though, don't ya think? Especially this one in the article: "Creating safe communities that support physical activity". That kinda got me. Oh yeah, safe communities, why didn't we think about that before? Piece of cake. As if safe communities aren't a good idea without obesity as a factor.
Sorry, not trying to be a downer or anything, but I think most non-obese people, from what I've seen in op-ed pieces and such, are NOT very supportive of any kind of incentives to help people lose weight. Start a topic like that in any non-weight-loss forum and I guarantee you'll here tripe like this:
"Great! Now we have to spend our hard-earned tax dollars because all these fat ***es can't control themselves?! Why don't we just staple their mouth shut. I'll gladly pitch in to buy a box of staples."
I only know that because I've literally seen that before.
Also, I notice that all of the six categories listed in that article are "support or encourage", which personally, I don't think will really does the trick in the long run. There's a lot of evidence, for instance, that D.A.R.E. programs don't really curb drug use, or that abstinence-only programs curb premarital sex. Government-sponsored "encouragement" can't really take the place of solid parenting and personal, internal commitment (wherever that comes from).