I noticed, that at the moment of this post, 3 of 5 submissions are in fact games more than one month old that just get submitted to every open jam to get some publicity... How is this handled? Will everyone notice and just vote them down? Or are they removed from the jam? Just curious.

I wish I had seen this post before I left individual comments directly to the game pages. 

I'm honestly just reporting them with the description: "Wasn't made for the jam. Simply posted it as a promotion."