microformats

Linux.com: "Microformats are a way to slip computer-readable information into HTML, so it's "semantically" marked-up, not just visually marked up.

With hCalendar, for example, when you advertise a big event on your Web page, it's not only human-readable, but the browser can notice that it's a calendar event..."

Feedzirra is an all-new Ruby feed parsing (it's not a generator) library by Paul Dix.

The choice of feed parsing libraries in Ruby has been reasonably limited so far, so Feedzirra is a most welcome addition to the Ruby ecosystem.