Status plugin previews not working for some sites

Why does the status plugin choke on the links of some sites that twitter and facebook can create previews and thumbnails? E.g., Why The Gates of Harvard Yard Exemplify Great Urban Design. For example, it hates anything from Curbed, e.g., http://www.curbed.com/2016/4/27/11519500/harvard-architecture-gates-blair-kamin-urban-design However, facebook, twitter, and hootsuite had no problem generating the thumbnail and excerpt.