Being new, unspun, I will give you the benefit of the doubt of not knowing the term on FR referred to as "BUMP", or also "BTTT". It is bumping an existing thread to the top of the browsing comments so FR members can see previous threads.
Doing this helps to keep pertinent information posted on a thread all in one place, instead of having to cross link them and bloat link files.
I also notice you posted on several of the duplicate threads on this topic, so I know that you are aware of them existing.
Bumping an existing thread is an efficient way to keep the threads organized.
From the posting guidelines:
"These guidelines are intended to help maintain a useful amount of order in a large site like this and to promote better posting"...."Don't spam - Post your message once. If you are not sure if it has posted, check the latest posts page".
All this to say that people who are really intrested in keeping research in one spot (on one thread of the same topic/source) finds it a real pain when these are duplicated. It becomes a vanity post.