I am not sure if it's a tip , because some people can have their browser set to not send the referrer URL, but ... Can't we easy see when a website have been reviewed by checking the servr logs, and look for referals from dmoz.com ?! i mean , the editors from dmoz , log-in , and check your website from their dmoz account panel ?!
You can only verify that it's been looked at, not accepted or rejected. Sometimes not even that, I hear that Robozilla will give false hits...
Things that can be going on when you get a hit from DMOZ in your server logs: An editor has reviewed the site and has listed it. An editor has reviewed the site and had decided not to list it. An editor has reviewed the site and has decided that it belongs better in another category and moves it to the unreviewed area in that category An editor has reviewed the site, but doesn't feel qualified to list it and has left it for another editor to deal with An editor has seen the URL somewhere and wants to know if the site is listed in the ODP already (part of tyhe process of doing that involves "pinging" the site An automated tool has reviewed the site suggestion for one of a large number of reasons which have to do with filtering out known spammers, removing duplicate submissions, etc. So hopefully you see that a lot of these reasons don't mean that much. And the most common reason for it is the last one - the automated tools (which are tireless, of course). So really, server logs aren't a good way to know with any degree of certainty what is happening with a listing review in the ODP.
Some Dmoz editors will visit without leaving a referrer in your logs, by setting their referrer to blank. This makes good sense, because it prevents websites from cloaking junky content just in order to get into Dmoz.