Write meaningful / in depth content that is valuable to someone? It worked for Joel on software and 37signals. It's hard and can be a larger investment, but se

Write meaningful / in depth content that is valuable to someone? It worked for Joel on software and 37signals. It's hard and can be a larger investment, but seems that writing spam content and then spending day/days on optimize ways to spam it through different channels is not that great way to spend your time.