I'm confused, how has this helped your career? Has it helped because your nerd passion is trying out new technologies on the weekend? How would publicly embracing a non-work related hobby help one's career?
"But wait, you're a unique snowflake and your problem is SO different that it's ok for you to do one of these three. No you aren't and no it really isn't. Trust me."
I feel like this article is making a large number of assumptions about the problem I am trying to solve.
Using an XML native NoSQL database is a game changer when consuming XML and producing XML HTTP APIs. A good XQuery engine makes many of the problems people are listing about XML simply go away.
I like @mnot's point about providing "excellent client bindings" in common languages.