I’m curious whether there’s a big overlap between people that the FBI is interested in and people who care about grammar. That’s not a flippant response: I’m genuinely curious if that is part of a shift towards white collar crimes (which could be welcome) and more generally criminal psychology.
I’ve been watching _The Wire_ and Idris Elba’s character sounds like a good overlap, but he feels very unusual (in fiction)--and definitely too careful about OpSec to use that kind of service.
More generally, there’s a lot of anecdotic evidence between problematic behaviour and low-level spelling details: one that is apparently better documented now is a correlation between insurance fraud and whether you capitalise properly the name of your employer on registration form.