Looks like the blog is down now, the linked to post says simply "Hello, this is Seth’s sister, Amy, with the sad news that Seth died on Saturday, April 26, 2014. He collapsed while hiking near his home in Berkeley, CA. He had asked that any memorial gifts be made to Amnesty International. Thank you to all for following and sharing Seth’s work."<p>-- <a href="http://webcache.googleusercontent.com/search?q=cache:http://blog.sethroberts.net/2014/04/27/seth/" rel="nofollow">http://webcache.googleusercontent.com/search?q=cache:http://...</a><p>I had the pleasure of knowing Seth personally and am deeply saddened to hear this news.