Re:As much as I hate to suggest this... (Score 1)

It's an intriguing thought, but people trying to bring down these bot nets will often purposely infect a machine so they can learn more about the bot net. If you block that machine's traffic you've just taken away a valuable tool in fixing the problem.

Also, I don't know how reliable your ISP is but I don't trust mine at all and can only imagine the problems they would create by blocking peoples machines (wrong IP's blocked, taking weeks to un-block cleaned machines, etc...).