I think the effort many of us put in to make sure that the relevant site info is indexed by the engines makes up for it. Many of my sites include special pages that only the search engines get to increase their "relevance" in the engines databases. What does pose a problem is where people are totally abusing the indexing methods to get their site promoted in searches that they shouldn't. I don't see that anything can be done about that (and efforts by some engines, including ignoring meta tags etc are quite annoying)
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I think the effort many of us put in to make sure that the relevant site info is indexed by the engines makes up for it. Many of my sites include special pages that only the search engines get to increase their "relevance" in the engines databases. What does pose a problem is where people are totally abusing the indexing methods to get their site promoted in searches that they shouldn't. I don't see that anything can be done about that (and efforts by some engines, including ignoring meta tags etc are quite annoying)