That's actually helpful levity when considering service offerings like this[1]:
DRDL interconnects control and data sessions of protocols like FTP. During the identification process DRDL aggregates detailed traffic properties like MIME-type, filename, chat channel and SIP caller ID. This granularity enables you not only to see the Xbox Live traffic, but rather the Xbox Live users who are playing Halo 3.
It's not clear whether use of a VPN/SSH would prevent this kind of traffic analysis, but an obfuscation daemon of some kind could surely be written.
While it's kind of interesting, I've never researched how networks like Freenet, or WASTE, etc deal with those issues (or, if they even address them at all).
