IG are letting the GA section run, but don't moderate it in any way. They do provide their own GAs, the ones in red, and give instant XP, the guaranteed ones in blue. So they do want the GA section to exist, they just don't think it's worth putting the bare minimum of effort into.
They do now...but if it gets to the point where its basically just them giving keys away...it won't stay running forever, again this was my entire point...long term big picture downfall of all these people putting up the same keys half the world already has from amazon (the other half being elloco and his alts

), as I said I don't personally give a flying pigs arse, I'm just explaining how they likely see it as a business concept.
They put some up, users put some up to reach higher level GAs of theirs, it keeps a rotation of choice going and they only have to fund half of it...when it gets to the point where they are funding it by themselves (i've noticed already they no longer do higher level GAs like they once did to persuade users to do them), they will stop doing them and cut their losses.
I assume it would have to get to a really bad point for this one to actually happen, as I said its a good business move for them...but the more people go against their rules (that they won't enforce, its true--only cursing is evil here), any business thats losing money and not attracting customers would stop doing a failing promotion as part of a site.
In the end, IG is at its core is a business, the store as we all know is their only concern they take aeriously...but in a second hand way that is a part of the store, just a part they could remove if they decide its not worth it anymore.
Putting up keys nobody wants constantly, even enough to irritate people away will hurt that section and in turn affect the customers it brings in (which i'm sure they keep tabs of by link redirects), if it actually gets so bad that its no longer worth doing...it will die.
You know this from the challenges, it may have happened when they claim the site was broken, but they didnt half fix it, its not even realistic from a programming aspect...that change was intentional, less cost, no real loss to them since its for new customers not regulars to be a fun little spin...and the giveaways are meant to be give and take to keep the game rotation fresh....
I'm not going to keep responding to multiple comments after this to keep repeating the same point, its just my opinion, its obviously not written in stone...but from a business view its the most logical outcome
We make it crap, they only check links to the store and never even look...those links get real low they decide its not worth the keys, game over.