Actually, submitting the project beforehand is probably a good Idea. What if your upload 30 minutes before the deadline is slow? I had myself almost not making it last time, because of that.
Hmm, there seem to be some shady entries around, tho.
I've just seen a few who are either trolling (no download, but a price tag, offensive thumbnails), or sport far earlier creation dates. But some of them disappearing hints at active moderation.