I meant to say that. Recently I spent hours to get my pages ranked well in about 5 engines. It worked finally but 3 weeks later the rankings have fallen. I contacted alta vista and infoseek and they claim they have a refresh function that runs every month that will drop sites in the process. I have read that keeping rankings up is a never ending battle which I am finding out.
Many people have different opinions and different techniques.
I do know of least one product that does this. We are not overloading their servers with irrelevant submissions. For instance, a hypothetical company is named Neanderthal Systems.