I know that there were similar wishes in the past that were rejected, but this must be reconsidered. We really need an updated_at selector for the ListPages module that works just like the created_at selector.
On my wiki, I have a critical need to view pages that haven't been updated in a certain amount of time, say 6 months. Right now, the ONLY way I can see to do this (other than manually) is to use the API to retrieve the content of EVERY page on my site (over 1400 and counting) so that I can view the metadata and determine whether each page has been updated or not in the last 6 months. This is an incredible waste of bandwidth that could become expensive for Wikidot, not to mention VERY slow for users.
It would be far more efficient if I could send one querry to the ListPages module with something like "updated_at<>last 6 months". The server-side code could query the database with this one short, simple request and return a list of pages (less than the full 1400) that match the criteria. This is a significantly more efficient use of bandwidth and would be much faster than doing it page-by-page via the API.