I noticed that NIS 2011 does not block proxify.com, even though it has a red cross and is marked as unsafe. Every other red webpage is blocked efficiently with the safeweb page showing instead, but it just lets profixy.com load without a peep.
Note that proxify.com isn't really a malicious webpage - it doesn't infect you in any way, but that's not the point. NIS should block webpages marked with red automatically, when that option is selected, shouldn't it? And it doesn't with proxify.com, whether that red mark is deserved for that particular webpage or not is irrelevant.