I am new ,what does bump mean.
It either means “I agree” or someone is basically pinging it so they can find it on their “my comments” page later.
When the Free Republic was 'new', whenever a post received a response, that post was 'bumped' to the top of the listed posts - irrespective of when it was first posted. Thus the phrase 'bump to the top,, or 'BTT', or 'bump'. It probably has been at least ten years since this was last the case, but 'bump' remains in the lexicon. Probably now more of a marker when someone wants to check our the post later.