title: Different ManyToManyField widget
body: <p>The default django 1.0.2 ManyToManyField widget (a multi-select) is difficult to use when there are a lot of things in the select box.  Is there another widget available that gives a comma separated list of id's in a textarea?   If this is not available what do I need to do to write one, and have it show up on ModelForm.as_p() and in the admin site?</p>