Am doing an extensive overhal of one of my sites hit by panda in May.
The number of soft 404's reported by WMT used to be very low but has been creeping up since June.
These pages are where members can advertise widgets but if they do not login for 90 days their listing does not show and a short message says why. I didn't consider this as a 404 as it is not an error.
But I have decided get rid of these in WMT so should I force them to return a 404 or should I noindex them?
These pages are likely to be in a temporary state - if the member logs in they can reinstate their listing. So which is easiest to revert in Googles eyes - 404 or noindex.