I guess Nara did another oopsie and didn't mention it in this thread '.There is no limit on entries like Huntress stated, you can submit as many you like, the quantity will not effect your over all prize. Quality>Quantity. But participation prizes are 1 per person not entry, though all valid entries are eligible for the top 3-8 spots on the list. I'll go update a rules on the first page about the amount of entries.
@aaronock
As long as it deals with RO/heRO in away random is fine for the contest