Honest question: Isn't it bad that they put this under a subdomain? Google won't credit your root domain for incoming links to a subdomain, will it? Similar to why it's better for your blog to be at example.com/blog instead of blog.example.com.
Opinons on both sides for this question. SEOMOZ recommends folders - "Since search engines keep different metrics for domains than they do subdomains, it is recommended that webmasters place link worthy content like blogs in subfolders rather than subdomains. (i.e. www.example.com/blog/ rather than blog.example.com) The notable exception to this is language specific websites. (i.e. en.example.com for english)"