But... But... that software I was looking at yesterday said that I should resubmit every day in order to keep my listings fresh...
Are you saying they LIED?!!! Oh no! 
Hi, this is my first post on this forum, but touches on a topic I have studied quite a bit, often to my own personal frustration.
That topic being DMOZ.
First of all, whoever is selling software that recommends daily spamming....oops....I mean submitting to DMOZ, is.....well.....fibbing.
The only things that daily submissions to DMOZ will net you are a) getting pushed to the back of the line or even

banned from DMOZ entirely for spamming them.
Incidently, on DMOZ's submission page, written in red letters, says any use of automated submission software is strictly against their terms of service. That also calls the software sales rep.....well...a fibber.
This thread started with a discussion of length of time from DMOZ acceptance, (itself taking anywhere from a couple of weeks to half a year!), to entry into the Google Directory.
I got one site into DMOZ very quickly (less than a month in a non-competitive category). It then took from its April acceptance until last week to appear in the Google Directory. No one said either of them was fast!
The only thing with DMOZ is to follow all of their rules and regulations. They live for them, it seems.
By the way, I am not now, nor ever have been associated with DMOZ. I don't play one on TV either.
Wayne Hurlbert