Remove your account from:

Enter the name of the social network

How to delete a Picasa account?

Delete your Picasa account

The description of the service:

Picasa was an image organizer and image viewer for organizing and editing digital photos, plus an integrated photo-sharing website.

Deletion complexity:

Not possible

You can't delete your Google Account for Picasa Web Albums without deleting your entire Google Account.

Direct links to delete: