We've had quite a few smart spambots recently, that word-by-word repeat previous posts where the topic contained words similar to the current one. These bots will later on add spamlinks into their signatures so they can help with SEO.
I suspected these are easily missed, so I've been going through users of the past months with 1 post and ran into a bunch of them that are still there, some in forums that I never check. So a headsup for other users, if someone makes a rather-confusing post as their first (and likely has their name as signature but this may not always be the case), you'll want to keep an eye out. Or you can google their post, see if it's indeed a 100%-rip from someone else's.