User blog comment:Kirkburn/Technical Update: September 2, 2015/@comment-126761-20150903215627/@comment-126761-20150903222915

We're very happy to get it live! We'll be rolling out further tweaks and improvements over the coming weeks.

For anyone interested in the rationale behind this preference: personal JS is such a powerful feature that we want to make sure anyone using it understands what they're doing. It's not something one should use simply because someone else told you to - at least, not without a good understanding of it first.

As part of this, the help pages around JS (and CSS) have had a major rewrite to give people much clearer advice about what these features do, and how best to use them. I hope they prove helpful!