Picasa Web Albums Adds Collaboration:

Till today we can only share our photos to let our friends view them. Now Picasa added a new feature collaborate to allows our frinds also add photos to our albums. Sounds good right :)

Collaborating on an album is easy:

To make an album collaborative, sign in to Picasa Web Albums and add contributors. Just click the 'Share' button, add contributors, and leave the 'Let people I share with contribute photos' checkbox selected

You can also manage access for contributors you've added to the 'Shared with' list by toggling the 'plus' icon next to their name — when the plus icon is green they can add photos.

To contribute once you've been invited to collaborate on an album, just log into Picasa Web Albums with your Google account and visit the album you've been invited to join. You'll see an Add photos button you can hit to upload your own pics to the album.

It seems like a nice little feature, and definitely something we'd like to see from more photo sharing apps (we're looking at you, Flickr).

Collaborate on Picasa Web Albums [Google Photos Blog]