Yes, you can stake your LSK to support delegates that align with your goals of how you want the platform and community to evolve. This mechanism is called ‘voting’. Different delegates will have different ways of contributing and some delegates payout some of their forged rewards to their voters, other use it for development purposes.

You can read more about Lisk Delegates on reddit or the official Lisk FAQ. Make sure to do your own research on which delegates align with your beliefs on how delegates should be contributing to the platform and community.