I read the wiki page BUT seemed to have miss understood what happens when you remap a domain sub-dir.
I thought that if I remapped xyz.com/media to /home/someuser
it was setting up a symbolic link into the the xyz.com/media folder AND the someuser then could FTP files to the xyz.com/media folder.
xyz.com/media has 2 files podcast1 and podcast2
What has happened instead is that there is now a folder /home/someuser/xyz.com/media with nothing in it. I used WebFTP to upload podcast3 into /home/someuser/xyz.com/media BUT podcast3 isn't available in the domain xyz.com/media folder.
SO OBVIOUSLY they are not sharing the same folder.
Do I understand this correctly?