Picking users for giveaways based on ratio is extremely flawed.

it's perfectly fine if you do checks every week and remove those that don't quality anymore :3

it's also very risky.
if someone notices a missing activated gift while you are applying for that whitelist/group, you will get a report for fake giveaway feedback and get permabanned.

View attached image.

As MuIIins said this exploit is hardly worth the risk because even the least observant people in a group will quickly pick up on whoever is behind on such measures (in general people on SG seem to be extremely vigilant when it comes to stuff like ratio) and will fairly quickly detect and depose of whoever is abusing the feature, along with a string of possible reports (and almost guaranteed blacklists) that could carry some heavy penalties since it's a serious rule violation, as well as publicly shunning the person at best if the behaviour is repeated.
Technically this could fool automated systems like SGTools but since winners are often manually checked by the giveaway creators anyway and suspicious results could still be retroactively monitored and reported, so again the risk is not worth the effort of being able to sneak into a few giveaways before you-know-what hits the fan.

Never thought about that, that's a big flaw indeed. Nice find!

You cheater! Very interesting exploit you found out. :O
Hope, somehow, this can be fixed anytime soon. Til then, more people need to know this.

Damn it. There's no BBQ chicken on this thread either.

But SGTools require some time for cache to reset and all.
So checking there should be safe, right?
Also, if the person waited until the cache got reset s/he should be found out by then right?

I haven't been using sgtools recently, but I thought there was some profile caching in place

SGTools therefore cashes your SG-account-data for about one or two days. More importantly it refreshes its cache at a random time. You don't know when you have to uncheck your wins, so you must leave them unchecked for quite a while. If you do this at least for more recent wins it's likely to get noticed, since people would lose levels. And as MuIIins pointed out would result in a permanent ban.
Best solution of course would be to fix the feedback button after a given amount of time after t was selected, like 2 weeks or the like (to account for revoked gifts or the like)

I've noticed that for some time, but as Mullins and others said, sudden unmarked feedback can lead perma-ban. So I don't worry about that much.
Rather, I was surprised many users don't know that they need to unmark for re-rolls.

I've been thinking about that for a while, and so if I had to play this game, then here are the additional steps I'd take to lower the risk:

1. identify GAs you won from users who are no longer active on the site (Last Online more than 3 months ago, maybe?)
2. if you have to choose GAs from users who are still active, then pick low value bundle trash GAs, so they won't notice the slight reduction in CV. Or, alternatively pick the highest value GAs, to reduce the number of people who can notice it.

Finally, Mr. Bond, this

I can easily uncheck "sent" on a few giveaways

should read "received", not "sent" :-)

Just knew this.
I just contacted support last month to change one of my giveaway feedback to received since I already sent him the gift long time ago and I just noticed it's not marked as received. Well, maybe this is the reason.

He's in my blacklist now.

It's a well known "exploit", and it was one of the reasons why sgtools had a random interval of sync.

But right now Sgtools logs all the games that you have marked as not received if there is a variation on the number into db. So every time you try to sync or you are forced to sync on sgtools, all your "marked as not received" games gets stored in the database, so it's really easy to ban someone who is doing this to bypass sgtools :)

And I don't think people that recruit for good closed private groups would fall into this.

Why can I even change the 'received' status years after a win? That makes no sense to me.

That's so sneaky... any fix in progress?

recently one of my recieved gift automatically unchecked
and idk why

may be move topic to Bugs / Suggestions ?

I've thought of this, but never done it. It's up to the giveaway maker to check the winners ratio

Hmmm interesting. I was wonder if this was possible, but never tested it. I'll have keep to an eye out for offenders and take screenshots of new recruits for my group. Thanks for the waning ♥

& Maybe giveaways even if not marked would show up on ones profile after one week?

Edit: Photo Example:

View attached image.

Also, why does the ratio matter? If I would give away 1000 Bad Rats, would I deserve to have a better ratio than someone that gave away 10 Fallout 4? You see the ratio and forget about the value. :/

This was just a diversion, for Jbond to brag about all those amazing games he won :p

but damn that could be an issue, never thought about that

All of the more reason to check for Real CV using SGTools and not RAW value here. As KnSYS mentioned above, if someone tries to play the system this way, SGTools will detect and ban him/her.

Missuse of giveaway feedback: Permanent.

Good luck´, with that.

1. User unchecks some gifts that were received.
2. User enters giveaway.
3. User wins giveaway.
4. User is caught with "unmarked wins" when checked.
5. User is temporarily suspended while Support investigates.
6. Giveaway is re-rolled because winner is suspended.
7. Naughty user's suspension is made permanent due to misuse of giveaway feedback.

First two offenders reported for misuse of giveaway feedback :3

SGTools is always watching...

View attached image.