Sharing your list of games with friends is one thing, sharing it publicly is quite another prospect.
I'd just like to do the former, but in reality, rather than just give them a ton of games to wade through, it would be much nicer if you put a tick in a box and export all those with ticks to a temporary page, that chosen friends or members could view ... and when you do another one, it overwrites the previous.
It would be like saying, 'These games are great, check them out'. And the page has images and links for them to do so.
I currently have a way to share what I have with others, that is kind of independent of GOG once set up, though you need to add game page links every time you get another game from GOG.
IonGoG Wishlist All each person needs, is a copy of my IonGoG Wishlist program, and the specific INI files for each user.
After that, you just share an updated user INI file when relevant.