Lets recap: the first week of our test we got 1250 hits, the second week netted 1741. The third week total is 1427. At first this seems like the number is dipping until you factor in sites being removed from the blocked list. Of the 1427 more than half are Urls that were not flagged last week. 784 URLs were flagged this week that were not flagged last week while several URLs are no longer flagged as malicious. Next week is the last week for this exercise. After that we will start over with a set of URLs that are publicly available so anybody can duplicate my effort.
The point of the exercise is to judge how well a traditional "bad site list" can keep up with the way threats from social networks like Twitter can spread.