I have a bunch of albums listed in my GPhotos directory that don't appear in Picasa Web. All of them have names of dates, with forward slashes in the name. I'm not sure where these albums are coming from, but I can't see their contents because a forward slash is not a valid character in a file name on Linux.
For example, I have a directory called 10/15/11. I have my gdatafs mounted at ~/Picasa, so this directory should be at ~/Picasa/GPhoto/10/15/11. When I do an "ls ~/Picasa/GPhoto/10\/15\/11" I get "No such file or directory."
If I do "ls ~/Picasa/GPhoto", I have 10/15/11 listed, but I can't open it at all.
Gdatafs should probably do some kind of translation of the album name to remove the /, since / is not valid in a file (or directory) name on Linux. If I could list the contents of the folder, maybe I could at least figure out where they come from. I suspect they come from Google+, but I'm not sure.