You may have tweaked your site for what search engine spiders are looking for, then carefully registered your site with dozens of engines, then waited weeks while nothing happened. Let me give you some surprising reasons why your listing isn't getting seen. I'll also let you in one some insider ways to easily get in the back door of key search engines. We lost your listing. Last fall Alta Vista, which had just bumped past Yahoo in popularity, suddenly dumped millions of listings from their database.
Reports say they accidentally reformatted a few key hard drives.
If your hits started drooping, the Alta Vista problem could be the explanation. Meanwhile, several major search engines where taking your URL submission and would promise to index your site. We now know they were unceremoniously dumping those submissions in the trash. If you went back and tried to find your listing and it wasn't there, you probably were not listed. And Yahoo is another story.