There is an aspect of Asperger's Syndrome (AS) around social reciprocation, and it is said that people with AS are less likely to share or to point out things of interest. I had quite a good example of this happen to me today. I had to walk into town at lunch as I had to buy a birthday card, and on the way to the card shop I witnessed quite an unusual and fairly serious accident. People from all over were rushing to help...people that were on the street anyway, people came out of nearby shops to help. Myself...I had a birthday card to buy and things seemed to be in hand so I just walked on. While inside the card store I heard ambulance sirens, and leaving the shop the press were in attendance also.
About half an hour after lunch ended I was back at work and someone sent around an e-mail saying there had been an accident in town. This person hadn't witnessed it but they were on the scene a short while after and had taken pictures, called an ambulance etc. Pictures were attached along with a description of the events. For a good 10 minutes after the e-mail went around the accident was quite the buzz of the office.
I had actually witnessed the accident and didn't even think to tell the people I sit next to, never mind construct an e-mail (with pictures) and send it around the whole office. The worst thing about it...I had a killer joke regarding an observation around the circumstances of the accident and I thought long and hard about replying to the global mail with my joke but in the end, what with the concern people were showing, I decided against it and I think that was the right decision.
I suppose it's one of the reasons we're so bad at conversations and small talk; we never really have anything we think is worth talking about whereas NTs seem to find all manner of minute absolutely enthralling.