>On the subject of site promotion in general. I only submit sites and pages to Alta Vista, Hot Bot, Excite,Lycos, Infoseek, WebCrawler and Yahoo. I operate under the assumption that these major search engines cover about 90% of all searches(anybody?).
If you are promoting a specialty site, it's worth it to look for a specialized search service. For example, there is one search service that only does airplane-related sites. Although it's normally useless, if I were promoting a resort with a landing strip, or a seller of airplane parts, it would be worth submitting to or asking for banner ads on. Most of the submission software just hurls submissions at all the engines it knows about, to the annoyance of those who run the engine and have to weed out the robo-submitted crap from the good stuff (like the sites we promote).