Eets, Puzzle Agent and World of Goo

NO. NO NO NO

*= game is on the bundle list
here is how it works
However, if your game is under the exploited games, you should not make a giveaway for it. The 3 games you mentionend are all considered exploited. Don't give them away in a regular giveaway.

The * means that the game is from a bundle.

And no you can't give those away since they are considered to be exploited.

It depends on how did you obtain them? So ones from bundles are fine but ones from ?? are not.

You should be fine if they are tradable copies.

Games on the exploited list will never be allowed as keys, even if they're in a bundle. See: Puzzle Agent. Giftable copies, though, are a-okay.