I set up Subsonic 7-8 months ago and used it for about 1 month, then stopped.
A few months later I noticed my monthly traffic log to my server was something like 100GB.... because of requests that were being relayed from my server, thanks to Subsonic.
I removed Subsonic weeks ago and shut down all HTTP, but even now when I turn on HTTP again, within a few seconds I'll see my server logs getting slammed.
It's really sad how much damage using Subsonic has done to my web presence. I'm hoping these spam/adbots will eventually realize I'm not redirecting requests anymore (the log is reporting nothing but 404's now), but they keep coming....