My theory:<p>My initial reaction to your post is that it doesn&#x27;t contribute anything useful: clearly you&#x27;re sufficiently different from the Facebook-using masses that statements about them have zero relevance to you and vice versa, and because the masses are, well, masses, it&#x27;s still perfectly legitimate to talk about them.<p><i>Since</i> your post (like the similar ones that appear on every submission about Facebook) doesn&#x27;t contribute anything useful (and especially not anything novel), and since I (subconsciously) project onto you and assume you are probably <i>aware</i> of that, I find myself filling in blanks and concluding that you&#x27;re posting for a different reason - something to the effect of &quot;hey look at me, <i>I</i> don&#x27;t use Facebook, I&#x27;m better than that, you&#x27;re all wasting your time and I&#x27;m not&quot;.<p>And, unsurprisingly, that kind of gloating and attention-seeking, even subtextual, is annoying and elicits a negative response.<p>I&#x27;m not saying you necessarily meant it that way, and I think this is all half-subconscious, but I do think it&#x27;s what&#x27;s happening.