Lets make a list of Indie Bundles that allow or not to give the keys away.

It's not allowed with Indie Royale.

You can add Indie Face Kick to the allowed list; they flat out encouraged it in their first bundle. I can't cite anything official on it, but if it's any difference, the "gifts" you purchased weren't gifts at all, but a new set of keys. It looked like this (to save some ninja time, all of those were used).

You can also add the Royales to the Not Allowed list, because of Q4 in here. A tweet also said that Bundle In A Box is discouraging it too, but I'm too lazy to check their TOS so it's up to someone else...

Another question would be if the bundle doesn't allow people to give away keys from the bundles they bought, what should those people do with extra keys they already have on their Steam library?

I'd like to add my data points to this, quotes from answers I got from the bundle creators.

Indie Gala: "You can gift your keys as long as you don't sell it."

Humble Bundle: "Please consider your bundle a “unit” and not to share copies of the games or Steam keys from it. If you’d like to give a copy of the games away, we have a system in place that allows you to buy a gift key from www.humblebundle.com so your friends can have access to direct downloads as well as any Steam or other keys we have included."

I don't understand why people have to complain about somebody giving something away. I could understand if they were trying to resell the keys but come on. Do people really have to be crybabies about somebody else doing something nice for other people.

Allowed or not according to TOS of sites, we are allowed to put on SG because SG is not under TOS of these bundle sellers.

In case anyone wants a clarification on Humble's perspective on the subject.

Matthew
NOV 13, 2012 | 01:03PM PST

Hey Michael,

Thans for bringing this to our attention. I’ll pass it on to the rest of the team for a response. You’re correct in that splitting up the bundle in any way is against our Terms of Service, however we simply don’t have the resources to prevent giveaways such as on this site.

I’m so sorry about the inconvenience!

Thank you for your support,
Matthew
Support Ninja
Humble Bundle

Just curious, as I haven't followed this discussion before.
Has anyone brought up the fact that this TOS is not legal in EU, and that anyone in EU can do whatever they want with the keys they bought?