The Gregg Group was founded 22 May 2004, prompted by the lack of online shorthand resources. As the primary use for shorthand — business and legal recording — has waned in recent decades, we generally acclaim the skill as a hobby or personal tool. The purpose of the group is to promote the use of Gregg systems of shorthand by providing advice to beginners, support for students, and an association of users of this efficient, attractive, and enjoyable method of writing.
I stumbled across a blogger on Tumblr (Bug Catcher in Viridian Forest) who has compiled some shorthand sightings from both the Sherlock Holmes books and the BBC Sherlock series. Pretty fun! The link is here.