[itsid]

If you changed the template as in post #45
there will be a popup if LAST option is selected as a reminder
If your users STILL don't enter any reason
or if they don't select any option,
the redirect is the best way to check report-reason.
(because it is already implemented)
Any javascript userside-realtime checking will only inflate sourcecode,
and won't help if javascript is disabled (what's still possible )

But I don't think that you have that 'not-so-smart' users on your board... or at least I hope so

[offtopic]
maybe a sticker from sarah utter (buyolympia.com):

will help users to know what to do [/offtopic]

cheers
*grinning*
'sid