title: What is the best autogrow textarea plugin for jQuery?
body: <p>There seem to be a ton of really bad autogrow textarea plugins for jQuery.  I want my autogrowing text box to be as good as Facebook's.  I want it to fit the current line only, and add a line right before it's needed.</p>
  
  <p>Most of the plugins I've reviewed try to guess line height from number of characters, which seems too naive.  I've read one solution that creates a hidden div to calculate height.  That seems like the right path, but that solution wasn't in plugin form.</p>
  
  <p>What's out there that does what I want and is easy to install?</p>