Lotsofnoise poster "robgaloshes" wrote a LISTINGS parser that takes all of the the info from the LISTINGS page and reformats it in a super friendly Iphone interface. Not truly an "app" in that it is launched from a site and not bought via apple...but you would never know that using it. It is still being improved but it is already awesome for any of you with Iphones.
Check it out here:
http://siestabikes.com/b/lon/