Fair enough. I've not been involved with the gifting community and I've been gifted like 5 games total and all, but one were from a RL friend (the other was an exchange and I remember the game he gifted me well), but I see how that could be an issue for some.

I try and download any games I buy from GOG onto my hard drive backup, which I then update as and when necessary for patches etc.
But then, I also shelve my games manually in order of how well liked they are by me. There's no rhyme or other reason to my shelving which would mean a missing game would be, well, unmissed by me. ;)