From here:

With Drupal version 7, due later this year, Buytaert hopes to include technologies that will make sites running Drupal part of the Semantic Web, Tim ­Berners-­Lee’s vision for making online data understandable to machines as well as people. If Drupal hosts a website containing a company’s Securities and Exchange Commission profile, for example, other sites could access just the third-quarter revenues, without having to retrieve the whole profile. The goal of sharing data in smaller, better-defined chunks is to make Drupal a key part of the growing eco­system of websites that share structured data. If this effort succeeds, it will ensure Drupal’s continued relevance to the still-developing Web.—Clay Shirky