Thanks for the welcome guys. Having been a lurker here for around a year I felt it was time to share some of my experiences.
The only other act of kindness I have witnessed myself was at Atlanta Hartsfield airport on Thanksgiving eve last year. An elderly gentleman gave up his seat so that a lady could make it home in time to be with her family. Unfortunately, I had an international connection in LA, so I couldn't do the same.
Hopefully this post will have more contributions. I like to think that for every 100 disgusting acts, there is at least one act of kindness.
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~Mystery~