Also, search engine spamming attempts usually center around being top ranked for extremely popular keywords. You can try and fight that battle against other sites, but then be prepared to spend a lot of time each week, if not each day, defending your ranking. That effort usually would be better spent on networking and alternative forms of publicity, described below.

If those practical reasons aren't enough, how about some ethical ones? The content of most web pages ought to be enough for search engines to determine relevancy without webmasters having to resort to repeating keywords for no reason other than to try and "beat" other web pages. The stakes will simply keep rising, and users will also begin to hate sites that undertake these measures.

Consider search engine spamming against spam mail. No one likes spam mail, and sites that use spam mail services often face a backlash from those on the receiving end. Sites that spam search engines degrade the value of search engine listings. As the problem grows, these sites may face the same backlash that spam mail generates.