This update has a more inclusive (read updated, more entries) list of spammer domains and is compeltely integerated into the wp-admin interface.
The updated script allow a user to import new blacklists both from exported WP blacklists as well as MT Blacklists without fear of having multiple entries.
There is also a new export feature that exports your blacklist to a text file which can be shared with other users.
Another new feature allows you to add single domains and regular expressions from new spam comments that the blacklist did not catch.
Download the updated zip file containing the whole WP Blacklist application from: