There are rightly some concerns about label-less form elements on the
create page. Obviously, this was done to create as lean and focussed a
create page as possible, which works very well. But the concern that
this might in some instances cause confusion--say if the page is
loaded as an edit page, or even if a similar label-less technique is
used elsewhere in the admin, is worth taking care of.
I therefore suggest using something like this,
http://flickr.com/photos/heilemann/2174223423/,
to provide both short-form inline help throughout the admin, as well
as labels for label-less elements.
They appear on hover and on focussing a form element, and disappear
again when either of those two are no longer met.
PS: This does not mean label-less elements should be used
thoughtlessly throughout the admin. They're only helpful in few select
and tightly controlled places.