There are two ways to cancel your Picasa Web Albums account:
- Delete your Google Account: This will mean you lose access to all your other Google products like Gmail or Calendar.
- Remove all content in your Google Account for Picasa Web Albums: You can delete all your albums and this will remove all your Picasa content.
- Sign in to Picasa Web Albums at http://picasaweb.google.com using your Google Account username and password.
- Select the album you'd like to delete.
- From the Actions menu above your photos, select Delete album.
- Click OK to confirm that you want to delete the album.
- Repeat these steps for each album in your account that you wish to delete.
Learn more about Picasa Web Albums and Google+.