Automating that could be a way to get banned :) We can generate a fair few tweets around the HiveChat each week, but not all will have $HIVE. Seems my active followers are mostly already on here, so I'm not extending the audience, but I will respond to various people and mention $HIVE if relevant.
We're also fighting against a general ambivalence about crypto and the FUD spread by the financial industry (used by crooks, waste of energy, a scam!).
I'm no marketing expert, but if someone comes up with a strategy I will help where I can.