Just out of curiosity, I'm wondering how people view the buying, selling, and trading of safety cards. On the one hand, it would be great to have them as memorabilia, but at the same time, aren't most of them stolen from the aircraft?
I think it is fine to take them and even sell them.
I also write to the airlines asking them for free cards to build up my growing collection. Sometimes if I have 2 of the same card then I sell or trade it.