On average, GoDaddy has a small fraction of its registered domains being spammed every day. (5.83% - 318 of 5459 in the past 5 days)
In October 2011, this crept up to 30.83% - 1919 of 6225. Because it is the largest in the market, this fraction translates into thousands of violations of their terms of service every week.
GoDaddy should create and monitor their own spam-trap and get proactive in managing this spam outbreak now that it has become an epidemic. They should work cooperatively with spam research companies to fix their problem.