Idea for a group.

Greetings. I don't know if something like this has been posted before or exist or even if someone will be interested. I was thinking is there a group based on bundle keys exchange and/or giveaways? I don't know about you but most of my games are from bundles and often i have some spare keys i don't want, and at the same time realized that i have missed something that could be nice. Not to mention that these keys obtaining involve some risk (SCAM or credit card fraud)

So i was thinking about a group organizing group giveaways with bundle keys and/or also using it's forum in steam for trading.
With simple rules like: No keys/humble links from a bundle finished no less than 30 days (To avoid the credit card fraud) and whoever win a giveaway, organizes another after receiving the gift.

I know there are more complicated matters about the bundle tiers and other stuff. But that can be sorted out i think. So do you know steam group like that, and if you don't do you think there is a place for one?