It could be related to the spam bot that was around a day or two ago. It posted new things that I immediately deleted. How "recently" are we talking about, here?
It started about 3 days ago, so yes, it probably
was that dreaded Spam Bot.
However that opens up another 2 questions:
1. What Kind of Spam Bot was it? (What did it post about?)
2. If it says that Spam Bots aren't a problem in the Forum Rules thread of the Steps of Knowledge, then why did we just have a Spam Bot infiltrate our Forum?