Ages ago we decided that an MMO's expansion (and add-ons) would deserve a product slot, now I've added them and those Releases need to migrate to each entry.
http://vgmdb.net/db/release.php?id=130
http://vgmdb.net/db/release.php?id=133
http://vgmdb.net/db/release.php?id=134
http://vgmdb.net/db/release.php?id=135
http://vgmdb.net/db/release.php?id=136
http://vgmdb.net/db/release.php?id=137
http://vgmdb.net/db/release.php?id=138
I guess it's also necessary to have Final Fantasy XI as a franchise, for somebody who wants to see the list of all the FFXI-related albums.