translation.en: All the people who participate in social media networks belong to the same old demographic categories that media companies and advertisers have used in order to understand them.
translation.zh: 参与社交传媒网的所有人 都能被归入以前旧的人口统计学里的种类 那些媒体公司和广告商们 以前用来了解人们的统计种类。