title: How can I code a textarea similar to Stackoverflow, FB, or OKC?
body: <p>How does stackoverflow implement the "comments" section of this site?  I'd like to create something similar to a FB Wall or okcupid.com profile edit.</p>
  
  <p>My goal is to create a wiki of sorts that has editable regions like each of these sites.  It's important that I can associate the user's cookie with the edit on the serverside so I can maintain tracking.</p>