The Ubuntu font and a fresh look at open font licensing

Interestingly enough - and for some comic relief in all the serious licensing talk - you may want to check the latest FONTLOG in the Ubuntu font source tree to see that among plenty of people listed for their contribution to this big-scope open font project, a professional type designer now working at Dalton Maag - world-famous among other things for a widely (over)used cartoon font - has also contributed to the design of the Ubuntu font :-)