>I submitted this URL to Open Directory at least for about a month now. However, I haven't seen it on any of the associated search engine yet.
You wouldn't have, even if it had been listed -- technical glitch, which should be fixed Real-Soon-Now.
If you want folks here to tell you whether it's been listed, rejected, or neither, you'll need to mention which category you submitted to.
>Do I get an email notification if it is rejected at all?
It is theoretically possible, but....winning the Irish Sweepstakes is probably more likely.
>Should I re-submit after site revision?
Not unless the site has already been listed AND the listing is no longer accurate.