hehe, if you have something that you feel like is worth submitting (I.E. You have some catasrophic emergency tomorrow and can't work on it so you just submit what has been done up until that point) then go ahead! But don't submit an empty project!
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.