Wow... a sudden drop in spam...
I admit, I was very surprised when I checked my email today after being offline for 7 or so hours, and discovered that there had only been a dozen or so pieces of spam in my inbox, when I normally receive hundreds (after filtering) over the same period of time. My immediate cynical conclusion was that my mail provider was experiencing problems - the optimist in me wanted to believe that Google had discovered how to increase the effectiveness of their spam filters ;o)
Then I read that Mccolo had been taken offline.
Then I saw the following graphs. Mccolo was apparently taken offline at 4.23pm (16:23) today, 11 November. Note the sudden drop in the amount of spam being received that occurred not long thereafter.
The 24 hour graph (the first one) displays the drop in levels best. If we look at the 2nd graph (which covers a week), we will see that there is a drop every day at around the same time, but today's drop is markedly greater.
We need another 24 hours to pass so that we can do another comparison. Note that if you look at the spam levels for 00:00 they are not that far from where it sits now. It will be fascinating to see how long it takes for spam levels to recover.