When publishing a photocast, note that album names will be converted to simple text without accent marks, spaces, or other special characters. As a result, publishing similar names may result in one photocast overwriting another. For example, all three of these entries would be treated as the same name:
To avoid this, give each album that you publish a name that is unique without regard to marks such as accents.
If you inadvertently overwrite a photocast, rename the album in the iPhoto source list using a unique name, and then publish the photocast.