User interfaces on the web will be as good as desktop applications. Just you wait. Or, if you prefer not to wait, take a look.

Coolness is instantaneous file transfer:

[phil@technomancer /Desktop/music/aerosmith]$ scp Dude Looks Like A Lady.mp3 thoth:
Dude Looks Like A Lady.mp3 100% 4138KB 4.0MB/s 00:00
[phil@technomancer /Desktop/music/aerosmith]$