Fortunately for the web as a whole, the best way to get good search engine placement these days (read: "good Google placement") is to have a good website that is relevant to whatever it is you want it to get a good placement for. Or else pay a placement fee, or a per-hit keyword ad fee, which any search engine would gladly set up for you.
One of the big factors determining your Google rank is how many other websites link to your website. In other words, if you sell Flux Capacitors, the best way to improve your rank is to have lots of links with the text "Flux Capacitors" that link to your site. And the best way to do that is to have a good website that people will want to link to.
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