If a user comes across a site because of a google search, it's more likely than not that he's there for a specific purpose and does not plan on returning. If t

If a user comes across a site because of a google search, it's more likely than not that he's there for a specific purpose and does not plan on returning. If the webmaster is able to glean useful information from his behavior and use that to improve his site, then it's possible that users in general are better off, but the original user is long gone.