"Have you seen those links which open an info box when you hover over them? Snap.com, for instance, offers such a service. I suggest not to use it; it might be fun once, but it gets very annoying very quickly for your audience."<p>Very annoying is an understatement.<p>Also, numbers 5 and 6 can conflict with each other at times. I'm not always certain which rule to favor, but maybe that's part of what makes UI design so interesting.