Welcome to WebmasterWorld Guest from 188.8.131.52
Forum Moderators: werty
These parter sites have thousands of domain names, so isn't blocking domain names really a moot point?
1 suggestion is to get multiple accounts, as each account can block up to 250 domains. This may help some if you can segregate your categories in a logical way.
You will always have few bad domains in the bunch.. Just concentrate on your top 50 domains that drive traffic - make sure there are no bad eggs in there..