There is a similar "Gray hat" SEO strategy, which involves buying domain names that include keywords you want, and then 301-redirecting them to your site--witho

There is a similar "Gray hat" SEO strategy, which involves buying domain names that include keywords you want, and then 301-redirecting them to your site--without updating their whois information. I wouldn't do this kind of thing unless you can devote a lot of attention to it. You can create content-light pages like the ones Patrick does, for, e.g., encryptedbackupsonline.com--each page on the site would have another title from the same keyword cluster, and each one would end with a call-to-action like "Tarsnap offers [encrypted backups online] for security-conscious power users." (Where the brackets indicate a hyperlink. Bonus points for having a landing page on your own site that targets those keywords. (As is probably clear from the above, I do SEO. Patrick's advice is extremely good, so if you have the time, you'll probably do best by just doing what he says. However, if you'd like to know what you might pay to outsource that process to a third party, well, my email address is in the profile.)