Part of what makes buddycloud so exciting is all the data we get to gather on ourselves (yup we're kind of nerdy, databases excite us) - and different things you can draw with that data.
One of our recent experiments was with drawing me and my friends travels as a subway map.

Different colored lines are my different friends, along the left side are the places they visited - and when the two lines are parallel and adjacent, it means that two or more of my friends met up.
This isn't in buddycloud yet - but might put the code for this graph on the blog so that you could use it to see what your own bus timetable looks like.
Ciao!
The Cloudies