Company shutdown causes 2/3rds drop in all spam

The original article is more informative:

Indeed. This is also over a year old and the drop-off lasted less than 24 hours. (Additionally and ironically; flagged for blog spam.)

This is way-old news. Why is it being posted again?

Isn't spam now back up to where it was before?

This graph was posted in the comments:

I see the big dip on Tuesday, but it's quite brief. I don't see a longer-term difference...

This graph is more illustrative:

"posted Nov 12th 2008 6:38pm"

Old.