Picasa Web Albums has now become private in 'real' sense. Previously, you could either set album public for everyone to view or mark them unlisted. When marked 'unlisted' album can be still accessed if direct access URL is known to any person. Now there is new (3rd) option 'Require
View & Edit files on Google Docs, Picasa, Amazon S3
We have already seen Xoopit to access contents of Gmail attachments at one place in user friendly thumbnail & explorer like format. Gladinet does same but with lot of supported services. It allows you to view and edit files stored on your Google Docs, Picasa, Amazon S3 and lots