I was on my iOS doing tests and out of 20 people only 3 gifted back. Once I established this I started jailing.
I've said to PRs if they can catch somebody doing it they can jail them. I'll be on my iOS at least 2 hours a day testing people around the Elf stalls jailing people that say G4G and them not returning the gift.
I only jail if I gift first and receive nothing back - I've even asked the players to promise and they've still not delivered. Why shouldn't they be jailed? The funny thing is I even have my name as Snake and they still scam.
If you don't agree- yucry???