I've not been making much use of Multiply lately. My friends seem more active on Facebook and Picasa. I still like some of the Multiply features. I find it the easiest for setting who should see each item and you can make things totally public if you want to, unlike Facebook.
I tried sharing pictures on Picasa, but there are aspects of that I don't really like and only a couple of friends use it, so I may go back to putting my pictures here. There's even a plug-in for the Picasa desktop app to automate that, although it doesn't upload things like descriptions and other metadata you can set on your pictures.
Anyone else got an opinion?