monline

After Washington Post handed over the investigation material -that it collected over the last months- to various ISPs, the servers of McColo Corp. were cut off from the internet. Several security firms confirmed that the event resulted in a serious drop of spam-level world-wide.

I use SpamAssassin to filter out most of the junk and I also keep a record (sender, recipient, date, subject, etc.) of all the spam that gets automatically deleted by my filter. I've taken a quick look at my spam stats and there was indeed a huge drop between 11st Nov and 12nd Nov.