I have seen others post in a dev and tech thread saying, among other things that he doesnt have a clue how the subject of the thread works, presumably to increase his post count and/to to show he posts in the sub.
I know cwrth did it when applying for this round, and maybe a few others, but from what I've seen/read it doesn't seem to be a huge issue. There's some inaccurate/pointless posts that I don't pay for, but it's decent most of the time. If there's someone who's really bad for this feel free to PM me and I'll send you a small bounty if they end up being removed.
@pugman - you can read the bob123 drama here:
https://bitcointalk.org/index.php?topic=5157334.0