If you have been using Picasa on Ubuntu via Wine, I have good news for you. Google has finally released a Linux version (which is at number 3 right now).
Picasa itself has a nice interface (see screenshot bellow), and even allows you to edit some of the pictures.
I use it for very basic tasks; they include viewing a bulk of pictures (or showing them to someone), uploading multiple pictures at the same time to my web Picasa albums, and now a new feature I like that allows you to upload pictures to your FaceBook account.
Enough talking, let's do some installing:
1- Download and install Picasa:
|cd downloads ## or any other source or downloads folder|
sudo dpkg -i picasa_3.0-current_i386.deb
2- Now let's setup a button for uploading your pics to FaceBook
You should see the FaceBook button from inside Picasa: