>surely in year 2006, automatic emails can be sent to let people know unless there is no will to do it.
Surely you're right.
Think about the process of reviewing sites. 90% of the submittals are from spammers, just waiting to see if we've figured out how to penetrate their latest disguise. There is absolutely no will to tell them!
Now, the ACCEPTED sites -- we tell EVERYBODY about them. There's no reason, no need, no point in telling individual people specifically. It's all out there for everyone.
And as for the rejected suggestions, 99% are from people that obviously have no common interest with the ODP, and the sites couldn't be made listable without a server meltdown and a webmaster brain transplant. There is no will to tell them anything! There is only a wish that they would go away (or alternatively, die of excruciating frustration).
How about the legitimate sites that are waiting for review?
WE DON'T KNOW WHICH ONES THOSE ARE!
Not, at any rate, until we review the site! And at THAT point, we either tell everyone--or we lose all will to tell anyone.
What about the fraction of a cent of site suggestions that are accidentally deleted?
Well, we don't know for sure how to find them either. But it's obviously better to look for them some other way than in the toxic cesspool of "rejected suggestions". Because GOOD websites will show up other places: Google. Yahoo. Local chambers of commerce. business cards. printed advertisements. all the various GOOD places to look for good websites.
We already handle site suggestions VERY efficiently and VERY effectively: I doubt if any significant improvements in the process are possible. What we could really use, is more suggestions for good ways of finding GOOD sites (site suggestions are overwhelmingly spam!), and ways of making those ways of finding sites more efficient. Not repeat NOT suggestions of how to waste more time looking through a pool of sites (that is, rejected suggestions) that is (after spam email messages) the second worst known source of listable sites on earth.