Picasa is a software application for organizing and editing digital photos, originally created by Idealab and now owned by Google. "Picasa" is a blend of the name of Spanish painter Pablo Picasso, the phrase mi casa for "my house," and "pic" for pictures (personalized art) source Wikipedia.
Picasa 3 is the latest incarnation but is still in Beta which means they want feedback from users. I didn't know Picasa 3 was out until some one told me. Installing the new one is painless if you have an older version. You download the new one and get rid of the old short cut on your desk top, that's it.
There are some great improvements, I love the blemish tool; even an idiot such as myself can use it. Over all, a better product, the price is right, but the sharpening tool still sucks.
Picasa isn't my major editing tool but I often use it for family snapshots. I've recommended it to many, many people who don't want to get into heavy editing.
The improvements to Picasa 3, which I downloaded a couple of days ago, are nice indeed. But, again, the sharpening tool needs improvement!
The only tools I can see that have been added are a better crop tool and the "blemish" tool. I like the blemish tool, it works well.