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Is there a compelling reason that OSE treats subdomains as part of a parent domain, rather than as a separate site? Or is this just a technical limitation? I ask because it's my understanding that Google treats subdomains more like separate domains than like parts of the parent domain. OSE treating them more like folders creates some frustrating situations when researching niches that are heavily filled with blospot and wordpress.com blogs. First of all, the domain authority in these situations is not at all indicative of the strength of the site. It also makes it hard to evaluate linking root domains at a glance, since all blogspot blogs count as one domain. So to see all blogspot sites linking you have to go to the full link list -- where each site may be listed hundreds of times -- and you can't group them because they're all considered the same domain. To be sure you when researching these niches you can just throw out domain authority as a metric, and export every report to excel where you can sort things in a way to make it easier to separate sites. But if there isn't a compelling SEO reason to have OSE function this way, I'd love to see those subdomains treated as separate sites so I can have access to all the easy to use SEOmoz metrics and layouts without the extra work. And of course if there is a compelling SEO reason for subdomains to be treated as domains, I'd love to be educated! : )