title: Which is better to display extra info on web page? Pop up when you click or when you hover?
body: <p>I like to display more info on certain keywords in a web page. I don't want to send the visitor to another page and I prefer to show the extra info on top of the current page.</p>
  
  <p>The keywords are in an html list. It's basically a list of features and I want to offer more info about the features. So I have two ideas based on having 'More Info' or '?' hyperlinks.</p>
  
  <ol>
  <li>The user hovers on the link and a popup window shows up with the info and goes away when they hover away.</li>
  <li>They click on the link, a popup window with an 'X' shows up and they click on the X to close.</li>
  </ol>
  
  <p>Which one offers a better friendlier user experience?</p>
  
  <p>I like #1 because they don't have to click to open and click to close but the disadvantage is that windows might open inadvertently while they are mousing over the page.</p>