This Q&A is part of a weekly series of posts highlighting common questions encountered by technophiles and answered by users at Stack Exchange [...]
In other words, this is some content from a different web site, which we're re-publishing here because we can. I don't get it, what would be the idea of this, except for "content is good"? That people who might be interested in questions like this don't read the relevant SE sites, so they "need" Ars to step in and re-publish it? It's weirding me out.