Admittedly, this isn’t rocket science. It appears that only Ugg and Lee don’t know the answer to this one.
However, with hundreds of search engines on the internet as we speak, it would drive one crazy trying to cooperate with the unique algorithm search crawlers of every single one. SEO would be tantamount to a smash-your-head-against-a-wall-and-repeat exercise. Fortunately for SEO’ers, Google so dominates the search engine market, and will do so far, far into the future, that cooperating with Google’s crawl algorithms make mastering SEO possible.