Picasa Web Albums (PWA) is a photo-sharing web application from Google, often compared to programs like Flickr and Zooomr.
It allows users with accounts at Google to store and share 1 GB of photos for free. Users can purchase more storage space, which can be shared between Google services.
Users may upload pictures either via a web interface, Picasa 2.5.0 or later[4] on Microsoft Windows, using the Exporter for iPhoto, the Aperture to Picasa Web Albums plug-in, or Uploader on Mac OS X, or...