The building wave right now, as more and more data gets into the cloud, is to make it easy to move that data around. I see that the Windows Live Writer SDK comes with documentation on the live clipboard; I'm really interested in experimenting with the clipboard to see if it's possible to easy load it up with microformat XML to get info from one page into another, and ideally into Office as part of that loop.

Why microformats? It's like small languages. Rather than go and write a big huge new language or modify an existing one, sometimes it's easier to break out lex & yacc  (or bison or whatever the cool hip compiler kids are using today) and write up a quick language with some relevant semantic actions and do what you need.

XML is the new language of data and it makes that little data dance around, angelized and free:

Instead of throwing away what works today, microformats intend to solve simpler problems first by adapting to current behaviors and usage patterns (e.g. XHTML, blogging).

Source: microformats | About microformats