> Who are they for? You can determine who something is for by looking at who is paying for it. This one is provided to us for free and without any obvious sour

> Who are they for? You can determine who something is for by looking at who is paying for it. This one is provided to us for free and without any obvious source of third-party revenue (e.g. advertising), so, like HN comments, it is no doubt for the author.