Google Adwords Examples

What problems arise with AdWords and SEO when 2 or more domains are very similar. See, for example in the details?
www.usedcars.com or www.usedcars chevy.com-or-www.usedcars chevrolet.com Can ofcourse. For a human being, they may look similar, but the machines, they are actually considered as totally different. Even their URL may be similar, the content is what will vary and will be compared. Regarding SEO and AdWords sites with the only relevant and relationship "content" will be displayed. The more the ad showing the site is linked to you, you're more likely to have your site appears. I think the domain is considered a part of the contents in the comparison. You mean if the two areas are Adword campaign, which will be preferred Besides being shown the first right?
Critical Flaws in Google AdWords Behavioral Targeting
