To try to prescribe language for everyone is futile but within a journalistic institution it makes sense. The Economist Style Guide has a section on solecisms. It’s pretty interesting and informative.
Still, some of it is obvious:
Simon Pure is the real person (or thing), and has nothing to do with Caesar’s wife or driven snow.
Duh, right? And how about this one:
Soi-disant means self-styled, not so-called.
In all seriousness, though, some are quite useful:
Continuous describes something uninterrupted. Continual admits of a break. If your neighbours play loud music every night, it is a continual nuisance; it is not a continuous one unless the music is never turned off.
Are there any other style guidelines online? I didn’t find any in a brief look.