Picasa Web Albums is a photo hosting service offered by Google. Using Google Picasa you can manage the photos in Picasa web albums. Picasa web albums although not as popular as Flickr, it is still used by many. Picasa Downloader is a freeware that helps to batch download photos from picasa web albums.
Picasa Downloader can download multiple albums of any Picasa user given that the album status is set to public. In Picasa web albums users can select privacy options from public to restricted.
Enter the username of the user you want to download albums, it will list all the available albums and then select any album and click download. There is no option to stop the download in between if you pressed accidentally wrong album to download.
This is a simple tool to download multiple photos and albums and photos from picasa. Download Picasa Downloader from Codeplex.