I kind of thought that there wasn't many L4D cracked servers in the US because Windows dedicated servers are expensive in the US. Maybe they're dirt cheap in Russia

? I mean, they probably don't have those Windows licensing issues over there. There are a lot of admins that run their L4D server on their cable/dsl line though

. Oh, and there are Linux servers too, but then there's hardly little to any support for them. If you check the epc server list, like 90% of the servers are running on Windows.
I run my own versus server in the US, so I just play on that