title: Do search engines treat text-indent:-9999em or negative margin as SEO cheat?
body: <p>I want to use a technique like <code>text-indent:-9999em</code> or negative margin to replace my text with more pretty pictures, but I wonder if search engines would treat this as kinds of cheating?</p>
  
  <p>I think for it to know this, it must read my CSS file, so I can use <code>robots.txt</code> to forbid it  from reading my CSS file. If this works, can I also use <code>display:none</code> directly? Or I can manipulate some web-element's style by using jQuery code?</p>