Point. I forgot that GOG realized they'd been following a pattern recently.

I'll have to admit ignorance there. My only interaction with Steam is redeeming Humble Bundle keys so that GOG Connect can see them.

Uh oh.. I just noticed that all my settings are gone :(
It probably happened when I installed Firefox ESR.

EDIT: nevermind, I managed to import my settings from a .magog backup.

No such option in MaGog. If someone knows where to obtain this kind of information, I would gladly add it to MaGog.

Maybe by manually give you the info from different members ? I could do it for games from my library, but I don't know how to find the date of the beginning of the Galaxy support, btw.

If you can create and maintain a gogmix with the information, I can import the data from the gogmix into MaGog. Then whenever you update the gogmix, the data will be also updated on MaGog.

I never created a GOGmix, but I think it's not complicated ! I will try it but I'm currently preparing myself for a job interview next week so I will start later.

Also, Fables22 said "I'll post the current list of games with the new installers in a separate post..." but I don't find it :(

Because she never did.
GOG staff promised many things, but...well...

Things you should know:
1) The gogmix feature is somewhat buggy and I have heard of people losing all their gogmix's contents at some point, so back your data off GOG, too.
2) I believe there's a limit to the number of games you can have in one GOG (used to be 256, IIRC), so you might want to start off with multiple gogmixes (e.g. one for each letter of the alphabet).
3) You can't sort gogmixes, I think, so don't bother maintaining it in a sorted manner. MaGog will sort it for you.

Actually you can sort GOGmixes. It's just overly complicated and takes a lot of time.
It's right there in the second post of the thread you linked to:

http://bit.ly/GOG_games_installers

You can sort them, manually and slowly, moving each game up or down one position at a time.

You (and PaterAlf) are right. I should have phrased it better: "You can't sort gogmixes and keep your sanity at the same time".

Damn, I was blind ! Thanks, it's a good start, even if the list is certainly outdated.

Hey, I sort my GOGmix...

“But I don’t want to go among mad people," Alice remarked.
"Oh, you can’t help that," said the Cat: "we’re all mad here. I’m mad. You’re mad."
"How do you know I’m mad?" said Alice.
"You must be," said the Cat, "or you wouldn’t have come here.”
― Lewis Carroll, Alice's Adventures in Wonderland