Marvelous users have contributed a lot to GOG wiki and similiar sites. An idea came up to my mind: a page on which there are all of GOG games with dates, when they have been on sale lately. Additional column with counting days from that date (e.g. 'on sale 100 days ago'). It would allow us to estimate, when certain game can go on sale - I'd say most of the games are on sale twice a year.

What do you think about it?