I'm kinda diggin' google drive but I still like dropbox better. It may have less storage space but it has more functionality. I've started using drive for documents and dropbox for everything else.
easy. You can have a public folder, or shared folders. Drive doesn't have hotlinking (the last I looked) but from dropbox you can hotlink anything. photos, mp3s, whatever you like
I've DLed everything, but I don't have a smartphone, I'm fucking poor. I have a gov't issued free phone that allows me to make calls and text... and that's it.