In this version google upgrade their feature.
1. Sync your Picasa 3 and Picasa Web Albums edits
By enabling 'Sync to Web,' edits made to your photos in Picasa 3 are automatically transferred to your corresponding online albums.
2. Preview image files with Picasa Photo Viewer
The photo viewer is a fast, lightweight application for viewing images on your desktop or through Windows Explorer. Installed with Picasa 3, it lets you to take a quick look at images without having to fully open the Picasa 3 program.
3. Create and edit movies
Combine your photos, videos, and music into a movie or use the editing room to trim your existing movies.
4. Capture your screen
Instantly take and import your screen captures and webcam captures into Picasa 3.
5. Add text or watermarks to your photos
You can easily personalize your photos using the Watermark and Text tools.
6. Print captions
Your captions are about to see a little more action. You can now print your captions or photo file names on or below your photos.
7. Upload easily to Picasa Web Albums
Use the Drop Box to hold quick uploads and upload throttling to multi-task during your upload.
8. Control your Picasa Web Albums settings
If you have an online album in Picasa Web Albums, you can now control the online settings through the corresponding folder or album in Picasa 3.
9. Manage folders on your computer
It's now possible to move entire folders around on your hard drive from within Picasa 3.
10. Get more information about your photos
We've added new icons and tools to the Library view to quickly communicate useful information about your photos.
Source :- Picasa.google.com
For me as a user. Picasa is easy for simple photo editing. I like to use it..
Want to try?? DOwnload here