While I do find an article that's been posted again & again & again to be annoying, sometimes when the replies for the first go into the hundreds ( like the first of this one ) it becomes hard to follow all the diverse arguments and lines of thoughts, and then I find a re-post to be helpful.
I also note that sometimes if a second post is not made, I will miss the first- despite being on the board a lot. So it's not always a bad thing to repost, at least once.