We'll continue to monitor spam traffic, as we always do, but here's what we've seen in the past few days:
On November 11, when the spam source was taken down, we saw a 70% drop in spam from levels seen at the beginning of the month. However, we've seen drops like this before. In late July this year there was a similar drop that was reversed within a few days.
The team at Google stays "on guard" as the fight continues!