So, the Community Game Jam has just ended, and they've had similar issues to wot GMTK did last year, where people abused the option to fix bugs after the jam ended by submitting their game several hours late, which led both jams to closing uploads because of this abuse of trust.
It would be great if the downloads list could include the date and time at which the file was uploaded to the jam, as this would encourage people to keep their original jam submissions around, but also allow for them to continue to work on the project after the jam has finished.