I notice that some coins that are already in the market are doing bounty campaign again like Credits, Veil Eterbase and among others, do you think it's important for a coins/tokens that are already listed to run a bounty campaign from time to time even if they are already listed in exchanges.
marketing is a very important matter that is very important, it is done so that someone gives feedback to them and also so that there are new investors and trader who are interested in trading and also that is a good thing.
you're right, bounty after the project is running is actually a way to keep their community stable. with such trade will continue to grow, and project can also get new investors who can pump for their coins.