One of the tenets of inbound marketing is to not annoy people. So why is it that many websites are still chock full of the elements that so many visitors have bemoaned over and over? Perhaps with the sheer excitement (or terror, depending on your personality) that comes with designing your own website, all of the user experience quirks that have driven you crazy over the years escape your mind. But poor user experience can cause high page abandonment rates, low visitor-to-lead conversion rates, poor organic search listing positions, and a plain ol' bad reputation. So we compiled a list of the 17 most annoying things we've seen on websites to act as a sort of guide for what not to do when designing your website. Let's take a look at the worst offenders!