I love spiders!<p>Just kidding.<p>I block them by putting a transparent cup over them, slide an open book cover beneath where they stand, so that they must enter on top of it, close the book, and off we go - I, the book, the cup that I press with all my force, and the spider trapped inside - to the nearest opening in the building, wishing them the very best on their new way of life, outside, and for me to live and thrive.<p>In my apartment, and I <i>swear</i> this is not a joke, most of the time I use "NoSQL - A Brief Guide to the Emerging World of Polyglot Persistence - Distilled", as my main transport mechanism.<p>Anyway, to the point. Similarly interesting behaviors of spiders include using web vibrations for communication and sensing, apparently even including tuning. You can easily google (is this still a cool way of saying "search"?) related articles, just ignore the web apps Vibrations API article on the MDN.