If you finally found the solution to your coding problem in a deep comment or something after having dozens of tabs open, you should write about it in your own blog.

Really. Describe the problem in your own words and the solution for it, even if the solution seems really obvious now. Doesn’t matter. Give credit and whatever, but use your own words because you will be surprised at how many people will land on it.

Write the blog post you wish you had found.

Engineering: "I don't have the requirements"

Engineers say this as if product isn't doing its job. The real problem is that engineering and product aren't working closely enough together. Engineering shouldn't brainlessly implement requirements from product. The best engineering teams are involved and understand their customers, and actively negotiate what is being built.