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Background: Kathy Sierra is a true tech luminary (a very intelligent and thoughtful author & teacher who was previously the master trainer for Sun Microsystems, co-creator of the Head First series of tech book, and author of the much-acclaimed Head First Design Patterns) who has had an ongoing battle with trolls attempting to ruin her life. She has unplugged from her Internet accounts to deal with it, and recently came back, but soon left again. She writes about it here: http://seriouspony.com/trouble-at-the-koolaid-point
It's important reading for everyone who talks online.