Good article in latest edition of Winding Road:
http://mag1.olivesoftware.com/am/getBookWRM.asp?Path=WRM/2007/01/01&BookCollection=WRM_AM&ReaderStyle=WR&OnePageMode=1
http://mag1.olivesoftware.com/am/getBookWRM.asp?Path=WRM/2007/01/01&BookCollection=WRM_AM&ReaderStyle=WR&OnePageMode=1