True but usually not too many people fall for this scammy strategy anymore. It's easy to see whether it is bots. Or paid shills.
They are not Bots per se, but the way these paid bumps group operate they probably have bots to automate their bumping task.
This is not even shilling but a pure non-sense spamming just the bring up the post.
Yes, but who can stop that? Is it the guy who operate bitcointalk or is there nothing you can do against that?