The design is simple and fantastic.<p>My suggestions:<p><pre><code>  1) 150 characters is MUCH too short to sufficiently
     describe what you are selling.  I would dynamically 
     increase the size of the description box and/or add 
     scrolling inside the box to increase the character 
     limit.  

  2) The ability to add pics would be nice also.

  3) More categories.
</code></pre>
Awesome job so far!