I like the idea of giving your target audience a freebie of what they want e.g. sample code for an API or tips for gotchas in the space that your product works

I like the idea of giving your target audience a freebie of what they want e.g. sample code for an API or tips for gotchas in the space that your product works in. You put yourself in your customers shoes, and try to do something that will help them - that's what makes you successful anyway, so it's good practice too.