Would you mind fielding some questions? I'm interested to know if the photo sharing is any good? Do the full-resolution versions stick around? Are the management features any good?
It reduces the dimensions of the picture, however it keeps a good quality.
Album management is great and it pulls/pushes your pictures from Picasa.
The album UI is also great.
I just found that the navigation bar of gmail is now extended so I can see notifications and comment on them without going to Google+
It's a FB killer :o
Things are going to get interesting in that space. If the people that I relate with get into Google+ I wouldn't need to check my FB. And they can get more people in by pluging it to Google Apps users.
I haven't looked closely at what happens when you upload an image to Google+, but I can tell you that it's trivially easy to share photos out of Picasa, which does let you get the originals.