Earlier today we released NoteTag on Adobe Labs. This technology is a proof-of-concept for a new project at Adobe currently code-named Kiwi. The Kiwi Project is an exploration of Read/Write RSS and Web 2.0 components for Adobe Flex and the Adobe Engagement Platform.
NoteTag is a sample Flex 2 application that allows users to capture notes during meetings and assign tasks within those notes to individuals. Underneath the hood, NoteTag stores notes as blog entries, formats tasks using a microformat, and uses tags to link tasks (from notes) to people.
Learn more about NoteTag and download the source files >
See a narrated screencast of NoteTag in action >

Hey this looks pretty neat. It you could use a PM Wiki like Trac on the backend you'd have a winner!! Especially if you rollup some other data like effort and dates into a gantt!
Interesting, seems Flex is similar to Ruby on Rails, am I correct?
If certain wikis have publishing APIs, then NoteTag could be modified to use the wiki as storage. I encourage you to explore the opportunities with the NoteTag source code!
Congradulations on being cool. (Downside... it just seems like a disconnected and externally dependent way to have your application go down. There is a dependency on external sources being available, they could change standards, and this is true with multiple application specific reliability points. Have you guys considered rather than this cool proof of concept that in real world terms, a database might be easier?)
You're absolutely right... mashups are only as reliable as the services they combine. Remember, our goal was to prove a concept and to release some early versions of RSS and read/write web components for Flex.