That’s the number of spam comments for one post that Akismet has rejected from just one blog post, I see. All were (attempted to be) posted in the last eight hours. Something about the title or content that’s attracting this kind of interest?
UPDATE: 11:27am, 18 November 2013
Make that more than 6,000. There are over 5,500 new attempted spam comments that Akismet stopped. Weird.