Any useful references (other than the printed version of the latest version of the Style Manual) that you think is good as a starting point? I have previously referenced the Economist Style Guide as well as the Guardian and Observer Style Guide, but was looking also for things that might help when it comes to more social media related language usage.
Also, I am curious about the readability benchmarks used for improving content quality, given that the Flesch–Kincaid readability tests and general guidelines around characters per line and page content density seem to be the standard measures.