So you know how I'll be approaching this, considering my "tough new rules":
I'm sending out confirmation emails as I go. I will be checking TO MAKE SURE THE ENTRY WASN'T INCLUDED IN A PREVIOUS CONTEST afterward. If I discovered that someone has sneaked through the cracks, I will email the entrant and redact the entry.
Oh, and for the record: Not all redacted entries signify that the entrant was "naughty." Sometimes they change their minds. I always keep the post number active so people don't start emailing me with, "Oh my, you seem to have skipped number 47!" messages.
Anyway, we'll see how things go. This is going to be a fun round! (Well of course I would say that. The queue is loaded with my favorite genres!)