This is not an advert but I've recently joined this Facebook Group,
https://www.facebook.com/groups/461165080672217/ . I wouldn't see it as a rival to this fine PPRuNe Thread but it is likely to come up with some interesting photographs and, perhaps, stories.
Needless to say, the great advantage of PRRuNe is that it benefits from the input of professional aviators and Techies.