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Our social networks live on after we die

Anthony Walker / U.S. Army Photo

Posting photos on Facebook for our friends and colleagues might not be a waste of time, as a new study shows our social networks appear to stay intact even after we die.

Why it matters: The study is the first-ever large-scale effort to look at the resilience of a person's social network — online or off — after his or her death. The researchers found increased interactions after someone died of cancer or an accident and less frequent communication after suicide or other causes that have stigma attached to them.

Our thought bubble: How does posting about or tagging someone in a photo translate into support? Can our online relationships be relied on in real life — and does that even matter?