I still don't have account on FB.
But that's my bad. People engaged with FB so much.
When I ask my friends to upload the pics of their recent trip/holidays, they say its already there on facebook
They don't even think of the actual option (picasa) now.
Thanks to FB that now photos/albums can be shared via link which people can see publicly (without FB login).
I still upload my pics on picasa which finally goes to g+.