Is it a way to (theoretically) get a positive profile, by posting various non-spam topics then sitting a while and starting to spam?
The replies are either by someone with a poor grasp of English, or are generated by a program whose programmer has a poor grasp of English!
I've seen it on other blogging sites, where you get very generic replies saying things like "I learned a lot from this site", which are the result of robot postings to get a positive profile.
Ian