This is a bummer.
It's kinda long so to summarize, it's a post written by an online friend of a man who passed away recently. He disappeared from the internet and it wasn't until two weeks after he died that they found an article about his death from a Detroit newspaper. It wasn't an obituary, it was a plea for someone to come pay their respects before he was buried. In those two weeks no one had shown up for him. None of his online friends, whom it sounds like were his only friends, knew that he had been living in a homeless shelter for a few months and walked to the library to get online.
What happens in this situation is an interesting subject I haven't seen come up often. My only experience (at least, to my knowledge, which is kinda the whole point of this) was a couple years ago when a guy from another forum I used to go to was killed in a theatre lighting accident. His wife spread the news online, otherwise I guess no one would have ever known what happened.
This also reminds me of a killer idea I had for a business that continues twittering and updating facebook statuses and what not after you die so you can haunt the internet in perpetuity.