I read on plone.org about the latest sprint at an old castle outside Vienna in Austria. What amazes me is the effort these guys put in. Some 35 people from all over the world participated in the 5 day sprint all at their own cost. No one gets paid except those few lucky whose company encourage their employees to spend some Open Source time.
A sprint is when a bunch of top Open Source developers meet up for a conferencelike event and just sit and program code. I think the most common methodology is XP (eXtreme Programming) at these events.
Plone seems to be a winner. Good work all fellow Open Soure developers.