I quickly fixed my setup so that I can use two macs to edit iWeb without copying a file. I thought of first using iDisk, but my Domain.sites package was already 23MB and the copy was slow. So I decided to use a flash thumb drive.
I moved the ~/Library/Application Support/iWeb/Domain.sites file to a flash drive that I always carry around with me. Then I deleted the file from this folder.
I opened Terminal and changed my path by typing ' cd ~/Library/Application\ Support/iWeb '
I typed in ' ln -s /Volumes/ThumbDriveName/Domain.sites Domain.sites ' and pressed enter.
I can open iWeb on one computer, make changes, Eject the drive, go to another computer, and Open iWeb, Make more changes. There is no need to every copy or sync this package.
From Steve Kirtley1's message:
http://discussions.apple.com/thread.jspa?messageID=1525121#1525121