Hi Beth!
We are more about helping the user organise all "their" stuff, so that
they can re-use it as they desire, including sharing it with others,
whilst controlling who can see what. We are hoping that one mode of
operation will be that people can share directly peer-to-peer, and
another will be server based. The two should mix and match quite
well.
The engine behind it all is based on folksonomies. Tagging content to
allow you to manage it better.
For example (taking something a little different to the usual web
pages ideas) you should be able to tag a period of time as "Party" and
then build a relationship between that time and your house, and tag
the friends you want to come with "Party" too... then they should be
able to see that there is a Party at your house, and compare it with
other things they have tagged for the same period of time...
You could also use it for forming adhoc social networks - by defining
a tag which relates to, say, a seminar topic, and then adding people
and resources to the same tag. Coupled with times on the resources,
the client software can then thread the data into a forum style
conversation, and keep resources (tagged as 'static' or similar)
separately.
So... well, we aim to do everything really!