When search marketing began to take off around the mid-2000s or so, it really put keywords in the spotlight. Google has been one of the pioneers of search marketing and of keyword targeting and today if you spend any time engaging in search engine optimization, it’s likely that you’ve attempted to keyword target with Google, particularly if you’ve used the Adwords online advertising platform. Keywords are the cornerstone of the Adwords platform and it looks like Twitter and Facebook might be following suit.