In social networks, even entire groups are dedicated to bounty companies. Subscribers closely monitor new posts and complete tasks to get new tokens.
Yes, these groups are very "interesting". They followback, mutually like and repost each other. It is easy to guess that such an activity does not give any benefit to a projects.
They show the activity. Activity is a part of bounty program. And it is very simple to do a very simple task to get tokens. Another think is airdrop. People get tokens for registration.