Dumb question. The most recent genuine spam comment in the WCI spam filter is dated 17th February. The second most recent is dated 4th February, and the third is dated 28th January. There are 30 spam comments dated 28th January, and 62 dated 27th January. And roughly the same number each and every day before that. (The spam filter still catches a few real comments by mistake, which I fish out, and I'm not counting them. I can't remember when the last spam comment got missed by the filter.)
The quantity of spam seems to have dropped off a cliff around noon 28th January 2014. Does anybody know why? Is it the same at other blogs, Typepad or not? No real reason for asking; I'm just curious about this good news.
Update: and the two most recent spam comments, that came in after the cliff, are not like the others. They look like adverts for sophisticated financial services, rather than the usual adverts for more, err, consumer-oriented products.