Probably a bunch of thread bumping accounts created to continue their meaningless business of bumping every single thread to the top and irritate the users and mods from such happenings in the forum.
You will get tired of counting if you continue to look for such accounts being created every hour, each day of every week. The logic behind them doing this is still unknown to the public, but they probably have a hidden marketplace of thread bumping services somewhere where they get paid for doing such kind of things because I can't believe that a person would waste any of his time doing something which earns him nothing at all.
Anything that can be done about this?
For now, do what @suchmoon suggested. And, pray for them to get a job so that they stop doing all this and we get rid of it.
