Someone who only communicates with the outside world via online tools like IRC, IM, Skype, email and forums.
Unlike a traditional hermit, an eHermit may have many "friends" but an eHermit will have met very few, if any of them, in real life (IRL).
The online comedy duo Rhett and Link claim credit for having coined the term during their podcast in early 2008.
Dude, you need to unplug! You're turning into some kind of eHermit!