I too am fundamentally opposed to game show spoilers in TV promos, but for DoND, I wasn't too upset at first, most likely because I fit the audience they're looking for with these promos -- I sort of like Deal Or No Deal, but I rarely watch it anymore because I am just sick of the total lack of climactic moments anymore. Too often we end up with players striving for $300,000 or $400,000. Once it gets to that, I just find no reason to watch. And because statistically speaking, this occurence is very likely to happen, it seems pointless to watch any of the show at all.
However, when I see an NBC promo saying "this woman could be the first million dollar winner," I think, "Okay. Maybe I'll tune in just to see what happens." What I am annoyed about, to no end, is that these promos exaggerate more than anything I've ever seen. The promo that I just mentioned was for an episode where the contestant was offered ~$250,000, and took the deal. What?!? That's happened many, many times in the past. And they made me sit through an hour of the show for it? Unconscionable!
We also know that, if they advertise someone getting a $200,000 offer, they're going to take it (or, they'll go on and lose everything)! If they didn't, they went on, and the offer went up to, say, $600,000, that's the offer they'd be advertising in the promo!
The same thing goes for 1 vs 100. I know that, at least for the first five episodes, NO ONE is going to get more than $200,000, because that's the highest amount they showed in their pre-premiere promos. It is so irritating!