No brut forcing passwords (every invalid try gives an encrypted response that would require decryption or the correct key so multiple attempts makes the attacker flooded with highly encrypted nonsense)
Spam can be sent back to spammers rendering spam problematic and perhaps costly to the spammer (I want to find a link to this thread cause it’s a good one)
Access to your virtual drive and all your files from anywhere and any computer that has the client software installed.
A very interesting network update mechanism that I believe is still only theoretical but mentioned by Mr Irvine himself where a sacrificial vault with as good or better ranking is accepted as an update to the network
The caching mechanism that speeds up connection to popular content where a traditional server would be flooded with traffic and bogged down
so many gems