<i>First up is the internet's inability to block malicious traffic as a whole.</i><p>That's not a bug, it's a feature.<p>Seriously, though, can any network guys/girls spread some light on this? This sounds like adding features for easier censorship and forbidding anonymity:<p><i>SAVA fixes this by adding checkpoints across the network. These build up a database of trusted computers matched up with their IP addresses. Packets of data will be blocked if the computer and IP address don't match.</i>