Twitter friends are a wonder of social media, especially if you’re an introverted writer looking for community. Here’s why they’re so great.
Twitter friends are small, two-dimensional creatures that often take the appearance of models, bearded knights, cats, household items, or occasionally book covers. They live in an application on your phone or a tab in your computer browser, and provide inspiration, encouragement, commiseration, congratulations, or random silliness as appropriate.
You can never be sure what form Twitter friends take in the physical world or what their physical-world names are, but none of this matters.
Names are only labels for people, and handles work just as well for that purpose. (Mine’s @AkkalonAS, in case you didn’t know.)
As for physical form, as long as the physical form can type, it’s wholly irrelevant.