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.
With the increasing number of new altcoins on the market, maybe old altcoin is thinking of continuing to introduce its project to investors. If investors know that their projects have been traded in the market, there are opportunities for new investors to enter and this is good for brand awareness
The best strategy is to make them available in different trading sites, not only 2 but more so people will notice this coin and that would increase the liquidity of the coin. Liquidity is one thing that investors are looking too, they normally trust a coin with good liquidity.